Discussion

Explanation:

A-C are one couple. Since A plays tennis, C has to play cricket or volleyball. 

Similarly, D-G are the other couple. Since G plays volleyball, D plays cricket or tennis. 

Using the other directly given data, the table can be partially filled as shown.

Now, one of B and G has to be in A2. Hence, A2 will definitely have three people (D, F, B/G). Hence, A1 as well as A3 will have two people each. 

Since the two people in A3 will be E and B/G, the two people in A1 have to be C and A. 

Now, depending on whethe D plays cricket or tennis, there can be two possibilities.

Two people (A and C) are seated in coach A1. 

Hence, option (a).

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