Sentence Correction

Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles islands.

A. sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of
B. sloth, that they found in Puerto Rico in 1991, has been dated at 34 million years old, thus making it the earliest mammal known on
C. sloth that was found in Puerto Rico in 1991, was dated at 34 million years old, making this the earliest known mammal of
D. sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on
E. sloth which, found in Puerto Rico in 1991, was dated at 34 million years old, made the sloth the earliest known mammal of

This question has been discussed before. I wanted to know if mammal on and mammal of made any difference?

nidhis.1408 wrote:Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles islands.

A. sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of
B. sloth, that they found in Puerto Rico in 1991, has been dated at 34 million years old, thus making it the earliest mammal known on
C. sloth that was found in Puerto Rico in 1991, was dated at 34 million years old, making this the earliest known mammal of
D. sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on
E. sloth which, found in Puerto Rico in 1991, was dated at 34 million years old, made the sloth the earliest known mammal of

This question has been discussed before. I wanted to know if mammal on and mammal of made any difference?

It is hard to tell this sometimes. So, look for more evident errors in the SC.
For example - SV agreement

Here, 'Fossils' - Plural is the subject. Therefore we need to eliminate all the options that do not use the correct verb form.

This will eliminate B, C and E. option B has one more error -- "they" -- to whom it is referring to?

Also, when you use the term -- "dated to be" "have been dated" are preferred. Eliminate A.

Option d should be the answer.

Hi Nidhi,

Yes, It does make the difference. Think about the clue "Native of" and "Native on"

I would choose "Mammal of"....

Expert comments please!

With Plant and Animal, we use "native to"
With People, we use "native of"