Problem: The fitness level of Derrick was horrible and that of Justin was amazing, due to

My choice: Derrick being unhealthy.

Problem: The walls were dirtier than the floors because we had scrubbed the

My choice: floors for a longer time.

Problem: The mother taught Nelson instead of Justin to crochet, because

My choice: Nelson was interested in crafts.

Problem: Victoria wore sunscreen and got some rays slowly and safely while Rebecca didn't care and stayed outside with no protection.

My choice:
Victoria got a nice tan.