Which of the following organisms are subject to natural selection?
- Prokaryotes that reproduce asexually
- single-celled eukaryotes that reproduce sexually
- organisms living in a changing environment
- organisms living in a stable environment
A. 1 and 2 only
B. 2 and 3 only
C. 3 and 4 only
D. 1, 2 and 3 only
E. 1, 2, 3 and 4