Refer to the Following Populations of a Plant Species and Then

Multiple Choice

Refer to the following populations of a plant species and then answer the questions that follow.
1. 20 plants capable of asexual reproduction only.
2. 50 plants with unisexual flowers. Some plants bear male and some female flowers.
3. 1,000 plants with bisexual, self-fertilizing flowers.
4. 500 plants with bisexual, self-sterile flowers that make seeds only when cross-pollinated.
-Which population would be most likely to survive in the event of a drastic environmental change?

A) 1
B) 2
C) 3
D) 4