Existentialism is a phylosophical theory, defined as "approach that emphasizes the existence of the individual person as a free and responsible agent..."
Therefore, the answer could be all of them as they are the individual beliefs and individuals can determine their own beliefs. However to best characterize this theory I would say that the answer is A.
The rain suddenly started.
all of a sudden it started to rain.
suddenly, it started to rain.
it began raining all of a sudden.
Answer:
He considers himself to be very important.
Question 1: which. Question 2: that.
