In each of the questions given below four words are given in bold. These four words may or may not be in their correct position. The sentence is then followed by options with the correct combination of words that should interchange with each other in order to make the sentence grammatically and contextually correct. Find the correct combination of the words that replace each other. If the sentence is correct as it is then select option (e) as your choice.
The recent strain (A) of tourists to the coastal (B) town has put a/an influx (C) on the local (D) infrastructure.

Correct option is D

The correct rearrangement to make sentence grammatically correct and contextually meaning is (A) - (C).
Thus, the sentence formed after rearrangements would be, “The recent influx of tourists to the coastal town has put a strain on the local infrastructure.”