Hi Brent, Thank you for the post. I'm still not clear on comparing choices D and E. In D, restricted is now an adjective of what? If it is an adjective of the frogs, why is this nonsensical? As for the idiom "until...", I cannot find this in any of my books and am an native English speaker...

Thanks that was really helpful

So my only question after reading the explanation is why is the word "thus" incorrectly used in answer D? Thus indicates a conclusion, so why is this problematic?

Thank you for the explanation.

CR: "Last August the XT..."

This is from an official practice exam and answer is A - having a tough time understanding why? Last August the XT chain of gasoline stations had a temporary sales promotion in effect. In the promotion, any customer who made a purchase of ten or more gallons of gasoline was entitled to a free car wa...

SC: "Unlike frogs that metamorphose..."

This is an official practice exam question with correct choice E. Really not sure why it is correct over B? Unlike frogs that metamorphose from tadpoles into adults within a one-year period, it takes three to four years for the mountain yellow-legged frog of the Sierra Nevada to reach adulthood, and...

SC: That versus Which

Below is a question from an official practice exam where E is correct answer. I think this has to do with the use of which versus that - it needs to use "that" because it is a restrictive clause. Is this accurate? For many revisionist historians, Christopher Columbus has come to personify ...

SC: The most widely...

This question is from an official practice exam. I'm trying to understand why A is a better choice than D? The most widely known images of Yosemite National Park are those made by photographer Ansel Adams, who photographed it continually from his teenage years on. A/ who photographed it continually ...