Can someone please help me understand where the difference lies between the construction of the sentences from 800Score.com and the OG that gives us two different answer for what seems to be the same problem?
HERE IS THE QUESTION FROM 800SCORE.COM:
Bird feathers appear to have evolved from dinosaur scales well over 100 million years ago, Chinese scientists have shown, based on a fossil bird found in the Yixian mountains of northern China.
A. Bird feathers appear to have evolved from dinosaur scales well over 100 million years ago, Chinese scientists have shown, based on a fossil bird found in the Yixian mountains of northern China.
B. Chinese scientists, having shown that bird feathers appear to have evolved from dinosaur scales well over 100 million years ago, based on a fossil bird found in the Yixian mountains of northern China.
C. Based on a fossil bird found in the Yixian mountains of northern China, Chiense scientists showed that bird feathers have appeared to have evolved from dinosaur scales well over 100 million years ago.
D. When a fossil bird in the Yixian mountains of northern China was found well over 100 million years ago, Chinese scientists showed that bird feathers appear to have evolved from dinosaur scales
E. Based on a fossil bird found in the Yixian mountains of northern China, Chinese scientists have shown that bird feathers appear to have evolved from dinosaur scales well over 100 million years ago.
800Score.com's OA: E
While I knew E looked good, I chose A because this SC question reminded me of an OG question from the 12th edition, on page 697:
HERE IS QUESTION 25 FROM OG 12:
Based on accounts of various ancient writers, scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century B.C., worshipped a goddess known in Latin as Bona Dea, "the good goddess."
A. Based on accounts of various ancient writers,
B. Basing it on various ancient writers' accounts,
C. With accounts of various ancient writers used for a basis,
D. By the accounts of various ancient writers they used,
E. Using accounts of various ancient writers,
The Official Guide's OA: E
HERE IS THE QUESTION FROM 800SCORE.COM:
Bird feathers appear to have evolved from dinosaur scales well over 100 million years ago, Chinese scientists have shown, based on a fossil bird found in the Yixian mountains of northern China.
A. Bird feathers appear to have evolved from dinosaur scales well over 100 million years ago, Chinese scientists have shown, based on a fossil bird found in the Yixian mountains of northern China.
B. Chinese scientists, having shown that bird feathers appear to have evolved from dinosaur scales well over 100 million years ago, based on a fossil bird found in the Yixian mountains of northern China.
C. Based on a fossil bird found in the Yixian mountains of northern China, Chiense scientists showed that bird feathers have appeared to have evolved from dinosaur scales well over 100 million years ago.
D. When a fossil bird in the Yixian mountains of northern China was found well over 100 million years ago, Chinese scientists showed that bird feathers appear to have evolved from dinosaur scales
E. Based on a fossil bird found in the Yixian mountains of northern China, Chinese scientists have shown that bird feathers appear to have evolved from dinosaur scales well over 100 million years ago.
800Score.com's OA: E
While I knew E looked good, I chose A because this SC question reminded me of an OG question from the 12th edition, on page 697:
HERE IS QUESTION 25 FROM OG 12:
Based on accounts of various ancient writers, scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century B.C., worshipped a goddess known in Latin as Bona Dea, "the good goddess."
A. Based on accounts of various ancient writers,
B. Basing it on various ancient writers' accounts,
C. With accounts of various ancient writers used for a basis,
D. By the accounts of various ancient writers they used,
E. Using accounts of various ancient writers,
The Official Guide's OA: E
