I believe the correct answer is hallucinations.
People with schizophrenia, a
chronic and severe mental disorder that affects person’s thinking, feeling, and
person’s behaviour, often have disturbed perceptions, such as hallucination,
which are sensory experiences without sensory stimulation that involve the
apparent perception of something not present.
The answer is C because the oasis is a small body of water where there is very few water.
Normally, that would be described as fad dieting looking for a quick fix to problems. I found a similar question with some choices. Out of those, this describes fanaticism; Being overly concerned with something to the point where you will try anything to get rid of it. This is increased as popular celebs promote it, even if others advise against it.
The correct answer is the Spanish American war of 1898.
It was a war between the United States and Cuba on the one side and Spanish on the other side, and it was won by the US. It's reason was the will of Cuba to become independent of Spain - so it was connected to the Cuban war of Independence.
