Question

a rotation of night shifts and early morning classes ___ an unsustainable routine for many medical interns. for example, a 2021 survey of teaching hospitals in new york found that interns assigned to overnight rotations followed by 8 a.m. lectures averaged fewer than five hours of sleep, a pattern associated with higher error rates and increased burnout over the course of the year.
20
mark for review
which choice completes the text so that it conforms to the conventions of standard english?
a create
b creates
c have created
d is creating

Explanation:

To determine the correct verb, we analyze the subject and tense. The subject "A rotation of night shifts and early morning classes" is a singular noun phrase (the rotation is the subject, not the individual shifts/classes). The text describes a general fact, so we use the simple present tense. "Creates" is the singular simple present form, while "create" (plural), "have created" (present perfect, incorrect subject - verb agreement), and "is creating" (present continuous, not for general facts) are incorrect.

Answer:

B. creates