|||Common||| Select the most appropriate option to substitute the underlined segment in the given sentence. If no substitution is required, select No improvement. |||End|||
The workers of this textile factory `ul("demand higher wages")` for a long time.

Options

A. have been demanding higher wages
B. demanded higher wages
C. has demanded higher wages
D. No improvement

Answer

A

Explanation

The phrase "for a long time" indicates the duration of some activity which started in past and still continues. We use present/past perfect continuous to represent such actions. Out of the given alternatives, only option A represents the correct tense. Therefore, it is the correct answer.