How many nutrients does the body need?

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.

What is the result of procrastination? a. having less time to work on tasks b. being able to plan your tasks more effectively c. having more energy to work on tasks d. getting tasks done promptly

Can someone give me a hand with this one.