Answer:
B
Explanation:
The reason is because the sky overcast system is to go into the sky and try to figure out the wheater which would be a dependent clause in this situation please let my know if im wrong :) hope it helps
For indicating time, the best answer is C- During, because this word tells a reader when an action is taking place.
Again implies that something has been done before, and is being done again, but does not imply <em>when</em> it is being re-done.
Furthermore is a word with a similar meaning to "Also", so it is not connected to the idea of time.
Besides generally means "other than" which, again, has no connection to time.
