NEED HELP ASAP, WILL AWARD BRAINEST TO CORRECT ANSWER

Question 1:
Johnny wants to know how many students in his school enjoy watching science programs on TV. He poses this question to all 26 students in his science class and finds that 75% of his classmates enjoy watching science programs on TV. He claims that 75% of the school's student population would be expected to enjoy watching science programs on TV. Is Johnny making a valid inference about this population?

A.Yes, it is a valid inference because his classmates make up a random sample of the students in the school

B.Yes, it is a valid inference because he asked all 26 students in his science class

C.No, it is not a valid inference because he asked all 26 students in his science class instead of taking a sample from his math class

D. No, it is not a valid inference because his classmates do not make up a random sample of the students in the school

Question 2:

The two dot plots below compare the forearm lengths of two groups of schoolchildren:

Two dot plots are shown one below the other. The title for the top dot plot is Forearm Length, Group A and the title for the bottom plot is Forearm Length, Group B. Below the line for each dot plot is written Length followed by inches in parentheses. There are markings from 9 to 12 on each line at intervals of one. For the top line there are 3 dots above the first mark, 5 dots above the second mark, and 2 dots above the third mark. For the bottom line there are 3 dots above the second mark, 4 dots above the third mark and 3 dots above the fourth mark.

Based on visual inspection of the dot plots, which group appears to have the longer average forearm length?

A. Group A, because three children in the group have the least forearm length of
9 inches

B. Group B, because three children in the group have the least forearm length of
9 inches

C. Group A, because two children have a forearm length longer than 10 inches

D. Group B, because seven children have a forearm length longer than 10 inches