detailed solution

Correct option is D

With the assistance of the hint, we are able to understand that there are two sentences within the above-given statement that are being said or narrated by the identical person.
In the first sentence: The speaker ‘X’ is asking ‘Y’, why the police suspected him.
So, we will conclude that ‘X’ is unaware of the reality and therefore the reason for the police to suspect ‘Y’.
Let’s observe the given options:
a)Truth- As stated within the first sentence, ‘X’ is unaware of the reality.
b)Reason- As stated within the first sentence, ‘X’ is asking ‘Y’ the explanation for the police to suspect him.
c)Point- it's used during arguments and reasoning. But within the given sentence, ‘X’ isn't arguing or quarreling with ‘Y’.
d)Sense- it's wont to state a meaning.
The correct answer is Option- D, Sense. As ‘X’ is confused and states within the second sentence that he's unable to grasp true.