<p>The fruit fly is often used to study genetic mechanisms,
(because it reproduces rapidly) scientists can observe the
effects of experiments on several generations.</p>
<p>(A) mechanisms, because it reproduces rapidly
(B) mechanisms, since it reproduces rapidly,
(C) mechanisms, since, with its rapid reproduction,
(D) mechanisms; because it reproduces rapidly,
(E) mechanisms; then rapid reproduction allows</p>
<p>Benin was the first sub-Saharan African country to
experience a civilian coup: (they were a regime that
was dominated by the armed forces and obliged by)
citizens to implement democratic reforms.</p>
<p>(A) they were a regime that was dominated by
the armed forces and obliged by
(B) they had been a regime that was dominated by the
armed forces, when they were obliged to
(C) it had a regime, armed forces dominating, but then
were obliged to
(D) armed forces dominated them until this regime
were obliged by
(E) a regime, dominated by the armed forces, was
obliged by</p>
<p>First question’s answer is (D).</p>
<p>Oh sorry I meant could someone explain to me the answers and the reason behind them? Btw the answers are D and E</p>
<p>First question:</p>
<p>(A) is grammatically incorrect because there are two independent clauses (rather, one independent clause separated from dependent and independent clauses) separated by a comma but no coordinating conjunction.</p>
<p>(B) is wrong for the same reason.</p>
<p>(C) is wrong for the same reason.</p>
<p>(D) is correct because a semicolon can separate the clauses.</p>
<p>(E) is wrong for a lot of reasons, the most obvious of which is that the first clause is not supposed to make the second clause true as “then” implies. In the original sentence, the second set of clauses was supposed to support the first clause.</p>
<p>Second question:</p>
<p>(A) is wrong because “they” is ambiguous.</p>
<p>(B) supports discontinuous verb tense and fails to show the causality of the armed forces’ domination and the push for reformation as in the original sentence. Furthermore, the comma before “when they were” is unnecessary.</p>
<p>(C) is wrong because “it” and “were” do not agree in number. Also, the participial phrase “armed forces dominating” is awkwardly placed and does not support causality as strongly as the original sentence intends to do so.</p>
<p>(D) is wrong because “them” is amiguous. The demonstrative pronoun “this” seems unsupported because there is no antecedent or prior mention of a regime. The sentence is also wrong because “regime” is singular.</p>
<p>(E) is correct because the participal strongly shows causation, and there are no grammatical errors.</p>