(A) what are called aperiodic tiles, turned out to describe
(B) what is called aperiodic tiles, describes
(C) aperiodic tiles, describing
(D) so-called aperiodic tiles, describe
(E) aperiodic tiles, it turned out to describe
Solution:
Subject-verb Agreement
In B, “what is called…tiles…” is wrong. If “tiles” (noun) is plural then verb should be plural as well.
In C, “The work of XYZ…,…,describing…” is awkward. Wrong tense, it should be present tense.
In D, “The work of XYZ…,…,describe…” is incorrect. Since “the work” (noun) is singular, the verb should be describes.
In E, “The work” is the subject, hence “it” is not required after the coma. Moreover, “it” is ambiguous which can refer to “work” or “geometry”
The work of XYZ describes...
The work of XYZ turned out to describe…
Therefore, A is the best choice. “The work of XYZ…,…, turned out to describe…” maintains the subject verb agreement.
Sentence Correction - 1000 Questions with Solution:
