B. must be related.
The main point of having a thesis statement is to explain the certain topic. Topic Sentences are sentences that explain how the topic is related to your thesis statement so it must always be relevant.
Answer:
building of gardens to help bees sources for food supply
This kind of seems like a personal question...
Answer:
An example.
Explanation:
It is providing an example, saying that city buses tend to run late, and that students have no control over it.