Available options:
[a]. dangerous.
[b]. positive.
[c]. movement.
[d]. protect them.
[e]. harmful substances.
[f]. smoking cigarettes.
[g]. Fun to learn.
[h]. mechanical.

Fact 1: Behaviors can be learned through play. Fact 2: Everyone can have fun and play together. Given the two facts above, what can behaviors be?
Answer:
[g].