Question

in 2021, the larkspur materials lab in portland issued a brief on its silk - infused concrete mix, a formula designed for pedestrian footbridges. the 38 - page document as well as its appendices ____ detailed stress curves and recommendations for curing times.
20 mark for review
which choice completes the text so that it conforms to the conventions of standard english?
a include
b includes
c including
d have included

Explanation:

To solve this, we analyze subject - verb agreement. The subject of the sentence is "The 38 - page document", and the phrase "as well as its appendices" is a prepositional phrase that does not change the subject's number. Since the subject "The 38 - page document" is singular, the verb should also be singular.

• Option A "include" is a plural verb, so it does not match the singular subject.
• Option B "includes" is a singular verb, which is in agreement with the singular subject "The 38 - page document".
• Option C "including" is a participle and cannot function as a main verb in this context.
• Option D "have included" is a plural verb in the present perfect tense and does not agree with the singular subject.

Answer:

B. includes