The answer is <span>a. ennui, french </span>
Stations on Earth send signals, while communication satellites beam the signals to another station thousands of miles away.
I believe it is the introduction which should be relatively brief. You shouldn't prolong it too much, because the emphasis should be put on the main part of your speech, and not so much on the introduction.
Answer: Feeling depressed is short term, Being depressed is long term
Explanation: Depression is diagnosed, so it’s confirmed by your doctor and only a doctor. However you can say you are feeling depressed as an easier way to say you feel bad or hopeless or whatever your form of depression is.