If he wants to just show why it is bad then his safest bet would be finding a report by a trusted news source that talks about how GM corn has caused illness.
Answer C should work.
The answer is A towards your question.
Gardening is good for using muscle in your body. The arms, legs, back, neck, etc. doing these tasks build muscle and burn calories.
Answer:
my mother uses a basin that can help her to wash the dishes
