My take is C. In A, the use of "to" in the the clause "to promote respect for archaeological sites" does not parallel the non underlined sections B and D are ruled out coz here the comparision is between two things "the value and workings of archaeology" which makes &qu...

Answer is E Here the non-underlined part "A leading figure in the Scottish enlightenment" is ideally modifying Adam Smith. Coz a leading figure cannot be cannot be compared to books. So, this rules out A to C. I prefer E to D given the flow of the sentence (dont know what the exact grammer...

During an ice age, the buildup of ice at the poles and the drop in water levels near the equator speed up the Earth’s rotation, like a spinning figure skater whose speed increases when her arms are drawn in . (A) like a spinning figure skater whose speed increases when her arms are drawn in (B) l...