Answer:
a. all living things reproduce
Step-by-step explanation:
- Some common characteristics define living organisms, and one such characteristic is the ability to reproduce.
- The ability to reproduce is one of the most important characteristics of a living being as it ensures that the species continues to live.
- Therefore, all living things whether unicellular or multicellular reproduce although the mode of reproduction in different organisms can vary, they can either reproduce sexually or asexually.
- In the given example, it is shown that the songbirds have given birth to a baby songbird and this emphasizes their ability to reproduce.