Question

which word or phrase would best fit at the topic level (i, ii, iii, etc.) of this outline?
a. wild animals
b. species of plants
c. mice
d. colobus monkeys

b. cats

1. russian blues
2. american shorthairs
3. british shorthairs

ii. livestock
a. pigs

1. berkshire pigs
2. vietnamese potbellied pigs

b. chickens

1. rhode island reds
2. leghorn chickens

Explanation:

The outline lists different types of livestock (pigs, chickens) and their breeds, as well as cat breeds. So, the top - level topic should be related to livestock.

Answer:

A. Livestock