Answer:
a. 0 is the correct answer.
Explanation:
We are the given the function:

If we refer to the attached graph, it represents
on the x axis and y value on y axis.
i.e. the graph represents:

For different values of
(on x axis), different values of
are shown on the y axis.
Various points that we can observe from the graph:

Here we have to find the value of:
where q =
radians
i.e. we have to find the value of

Please refer to the graph attached in the answer area.
Point is marked as P which shows the point (
).
So,
where q =
radians is 0.
So, correct answer is option a. 0