Botanists recognize over fifty different species of sunflower. One species, the silverleaf sunflower, ______ blank both an early-flowering ecotype

Question

Botanists recognize over fifty different species of sunflower. One species, the silverleaf sunflower, blank both an early-flowering ecotype that tends to grow in coastal areas and a late-flowering ecotype that grows inland.

Which choice completes the text so that it conforms to the conventions of Standard English?

Accepted Answer

Choice D is the best answer. This verb needs to function as the main verb in the sentence, with the subject &ldquo;one species,&rdquo; so it needs to be conjugated. This choice gives us the singular present tense &ldquo;includes,&rdquo; which is the only conjugated form of the verb among the choices. Choice A is incorrect. This doesn&rsquo;t complete the text in a way that conforms to the conventions of Standard English. This verb needs to function as the main verb in the sentence, with the subject &ldquo;one species,&rdquo; so it needs to be conjugated. &ldquo;Having included&rdquo; is a participle form of the verb: it&rsquo;s not conjugated and doesn&rsquo;t function like a normal verb. Choice B is incorrect. This doesn&rsquo;t complete the text in a way that conforms to the conventions of Standard English. This verb needs to function as the main verb in the sentence, with the subject &ldquo;one species,&rdquo; so it needs to be conjugated. &ldquo;Including&rdquo; is the gerund form of the verb: it&rsquo;s not conjugated and doesn&rsquo;t function like a normal verb. Choice C is incorrect. This doesn&rsquo;t complete the text in a way that conforms to the conventions of Standard English. This verb needs to function as the main verb in the sentence, with the subject &ldquo;one species,&rdquo; so it needs to be conjugated. &ldquo;To include&rdquo; is the infinitive form of the verb: it&rsquo;s not conjugated.

Question 16b9a9