【正确答案】 B

【答案解析】Verb form; Diction
The subordinate clause as business grows more complex uses the present-tense verb grows to describe an ongoing situation. The main clause describes an effect of this growing complexity; the verbs in the main clause should also use present-tense verbs. The present perfect progressive have been becoming is incorrect. The preferred way to introduce examples is with the phrase such as, rather than with the word like, which suggests a comparison.
A Like should be replaced by such as. Have been becoming is an incorrect verb tense.
B Correct. In this sentence, major and are becoming are present-tense verbs; such... as is the preferred form for introducing examples.
C Majored is a past-tense verb; those of is unnecessary and awkward. Becoming is preferable to being for describing an unfolding pattern of events.
D Like should be replaced by such as. Those of is unnecessary and awkward. Have been becoming is an incorrect verb tense.
E Having majored is an awkward past participle. Becoming is preferable to being for describing an unfolding pattern of events.
The correct answer is B.