The game is fun to play, it's implied because the family seems to be enjoying itself, and it's the only answer choice that isn't outright stated in the commercial.
1. Fundamental
2. Disbanded
3. Discuss
4. Second
5. Problems
6. Established
7. Consensus
8. Intentions
D. Shells
You can ignore all of the words after of until the verb (of marine mollusks)
So it's just shells are taken...