<p>Now that Nicholson (a) HAS FINISHED the research, she feels (b)REASONABLY CONFIDENT (c)ABOUT WRITING her paper on the (d) RISE OF the progressive movement in the United States.(e) no error</p>
<p>Why is it a? Don't you use has for actions that are continuing into the present? If she's done with her research, how can it still be continuing into the present?</p>
<p>Corrected Sentence:*Now that Michiko has
finished the research, she feels reasonably
confident about writing her paper on the rise of
the progressive movement in the United States.</p>
<p>The error in this sentence occurs at (A), where
the tense sequence is incorrect. The past tense of
the verb, “finished,” is inappropriate because the
adverb “now” indicates action begun in the past
but continuing until the present (action described
correctly by the present perfect tense).</p>
<p>There is no error at (B). The adjective “confident”
is used correctly after the verb “feels,” and the
adverb “reasonably” properly modifies “confident.”</p>
<p>There is no error at (C). The prepositional phrase
“about writing” functions properly as an adverb
modifying the adjective “confident.”</p>
<p>There is no error at (D). The noun “rise” serves
appropriately as the object of the preposition “on,”
and the preposition “of” introduces another
prepositional phrase that modifies “rise.”</p>
<p>There’s nothing wrong with the sentence OP gave us. I think he typed it wrong though. I’ve seen the original question before. It said “finished” rather than “has finished.” So the error would have been, as he mentioned, A, had he typed correctly.</p>