I would say C, because while cigarettes can cause weight loss, it's not a reason that nicotine would make it hard for someone to quit. Headaches are a symptom of nicotine withdrawal and loss of sleep as well.
<span>Fitness programs and other self-improvement programs are not always fun when a person does them alone, and can be extremely demotivating in the initial phases. In order to overcome this, one should ask friends to join the program with them. The company of friends and peers will keep you motivated and promote healthy competition among the members of your group, making the experience a more entertaining one.</span>
I feel like this is more of what friends you have but you could say hair color, height, eye color, etc.
Answer:
I always make sure I put everything I know into my education, no matter if I know it or not!
