My answer is
(E). It took me 35 seconds.
For this question, we might do without actually reading the sentence to its completion. (We can stop at "George Washington and Thomas Jefferson are".) In actual test, almost all SC questions require at least rudimentary (and sometime complete) understanding of the sentence. So, it pays to always read and comprehend the complete sentence.
(A) "the veneration" is not comparable / parallel with "George Washington and Thomas Jefferson".
(B) Note what follows after "as" is not a clause, but a noun phrase. In this case, "as" means "in the capacity of (the Roosevelts’ and the Kennedys’ veneration)". It does not make any sense.
Even though (B) is "as
is the Roosevelts’ and the Kennedys’ veneration", it is still incorrect. See (A).
(C) It is not clear what "that" refers to.
Whatever it refers to, "that accorded the Roosevelts and the Kennedys" is not comparable / parallel with "George Washington and Thomas Jefferson".
(D) Unclear what "it" refers to.
Whatever "it" refers to cannot lead to effective comparison.
(E) Clear and straightforward.