Institution: AGRANI BANK LTD Exam: Agrani bank Ltd - Officer 04.07.2008
Topic: Fill in the Blank, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The sentence in question refers to a change that has already occurred in terms of cultural values in Bangladesh over the past five years. To understand why "changed" (option A) is the correct choice, we need to consider the tense used and the context of the statement.

The phrase "over the past five years" denotes a specific timeframe that has already passed and implies a completed action. The simple past tense "changed" indicates that these changes in cultural values happened at some point in that past timeframe, aligning with the requirement to express an outcome as a result of those years.

In contrast, option B, "is changing," suggests an ongoing process, which contradicts the retrospective context established by "over the past five years." Option C, "will have changed," incorrectly implies that the changes are anticipated to occur before a future moment and is not relevant to the completed past context. Lastly, option D, "had changed," typically refers to a past action that occurred before another past action, thus making it less suitable given the straightforward completion of the thought presented in the sentence.

For these reasons, "changed" is the most appropriate and grammatically correct choice to convey the intended meaning.