The correct answer to your question would be that damage to the frontal lobes of the brain is a likely result of chronic use of alcohol - d. Chronicly abusing alcohol is the thing that will cause unwanted effects such as serious frontal lobe damage.
I am not really sure of this answer, but i think its 9. But i am not 100% sure. Take my answer wisely.
7. walking one mile every day
8. Have you developed healthy and supportive friendships
Moderate-intensity exercise includes activities in which a person burns<span> off three to six times as much energy per minute as he/she does when he/she is sitting quietly.</span>
Moderate-intensity exercise has been shown to reduce appetite and suppress ghrelin.
Examples for moderate-intensity exercise are: brisk walking, swimming or mowing the lawn.