Answers

1 a
2 d
3 c
4 a
5 a
6 c
7 b
8 a
9 d
10 b
11 c
12 b
13 c
14 b
15 c
16 a
17 d
18 c
19 d
20 b
21 c
22 a
23 a
24 a
25 a