Let’s arrange them carefully.
We have 8 persons:
A, B, C, D, E, F, G, H sitting around a circle facing the center.
Given:
C is second to the right of A.
E is opposite C.
F is to the immediate left of E.
B is to the immediate right of A.
G is to the immediate left of D.
Place A anywhere.
Since B is immediately right of A, and C is second right of A:
A→B→C
(Clockwise because all face the center.)
Now E is opposite C.
Then F is immediately left of E.
The arrangement becomes:
A, B, H, C, D, E, F, G
Now verify:
Who is to the right of D?
Since everyone faces the center, the right side is anticlockwise.
To the right of D is F.
F