Explanation:

Let’s break down the info:

- Five boys (p, q, r, s, t) sitting in a row (facing south), and five girls (A, B, C, D, E) sitting parallel (facing north).

- A is at one end of the girls’ row.

- q is just left of s among boys, and q is opposite E.

- B and r are diagonally opposite.

- t is opposite C, and C is just right of A.

Here’s how it falls into place:

1. If A is at the far left in the girls' row, C (who is just right of A) is second from the left.

2. t is opposite C.

3. q is just to the left of s (boys), and q sits opposite E (girls).

4. Arrange so B and r are diagonally opposite. That points to B being two spots away diagonally from r.

Final seating looks like this:

- Girls: A   C   B   D   E

- Boys:  p   t   r   q   s

“Who is sitting third to the right of C?”

- C is second on the left. Third to the right: Count three spots—lands on D.

So, the answer is:

- Option 2, D

Here’s why Option 2 (D) is correct:

- Third to the right of C in the girls’ row is D, not B.

- The clues fit this arrangement neatly, and Option 2 matches the logic.