Samuel Adams was by no means the first American to espouse the democratic cause, but he was the first to conceive the party machinery that made it practical.
Choice (D) is correct. It avoids the error of the original by using the past tense consistently.
The explanation for Incorrect Answer A:
Choice (A) involves an error in verb tense. It shifts from past tense ("was") to present perfect tense ("has been").
The explanation for Incorrect Answer B:
Choice (B) involves an error in verb tense. It shifts from past tense ("was") to present perfect tense ("had been").
The explanation for Incorrect Answer C:
Choice (C) involves an error in verb form. The participle "Having conceived" should be the infinitive form "to conceive."
The explanation for Incorrect Answer E:
Choice (E) creates a fragment. There is no subject for the verb "having been."
For the explanation, visit;
https://brainly.com/question/28267998
#SPJ4