The correct answer is A.
These are all signs that the person is suffering from stress that is affecting their body physically. Stress has many effects on the body such as those listed, it can also take the form of anger, sadness, irrationality, sleep problems, physical aches and pains in different parts of the body, anxiety and so forth.
This is known as congestive heart failure
Answer:
The 3rd Option
Explanation:
Simple for this question, C: an investigation because it uses only observations.
