Which of the following do not reproduce?

Options

A. Mules
B. Workers bees
C. Infertile human couples
D. All the above

Answer

To determine which of the following do not reproduce, we will analyze each option provided:

1. **Mules**:
- Mules are hybrids resulting from the mating of a male donkey and a female horse.
- They are known to be sterile, meaning they cannot produce offspring.
- Therefore, mules do not reproduce.

2. **Worker Bees**:
- Worker bees are female bees that do not reproduce.
- They are sterile and their primary role is to support the colony by foraging for food, caring for the queen's offspring, and maintaining the hive.
- Hence, worker bees do not reproduce.

3. **Infertile Human Couples**:
- Infertile human couples are those who are unable to conceive and produce offspring.
- This means they cannot reproduce and have no fertile offspring.

4. **All of These**:
- Since all the previous options (mules, worker bees, and infertile human couples) do not reproduce, this option suggests that all the listed entities are incapable of reproduction.

**Conclusion**:
The correct answer to the question "Which of the following do not reproduce?" is option number four: **All of these**.