Which of the following is a sentence fragment?

a. hiding in the tree fort he had built as a kid.
b. knowing he would be late, she took a nap
c. realizing you are getting older is sobering
d. checking his mail each day was always fun

Which statement best describes the type of appeal used in this public service advertisement? an emotional appeal is made by presenting a wide range of jobs for women. an emotional appeal is made by emphasizing the need for a peaceful approach. an ethical appeal is made by providing pictures of a variety of role models. a logical appeal is made by including words that explain the meaning of the poster.

What is chemistry and it applications

Can anyone plz with this question i accidentally posted on physics it's 99 points plus this 5 ponts and will mark as brainliest link :