What is the importance of consuming an adequate amount of proteins in the diet?

So i have a lot of answers answered but it says i still need to answer more questions. why is it doing that? how many questions need to be answered?

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3

What are reasons people use tobacco