Chapter 7 – Answers

1 – a, c, d, f

2 – a

3 – b, c, e

4 – c

5 – a, d, e

6 – a

7 – b, d

8 – c

9 – d

10 – b

11 – a, c, d

12 – a

13 – b, c, f

14 – c

15 – b

16 – a

17 – a, d

18 – c, d

19 – b

20 – c