NEED HELP ASAP PLZ WILL GIVE BRAINLIEST.

Review the detail
William Golding took part in many battles during World War II, including D-Day.
Which is the best inference that can be drawn about how these experiences shaped his writing?

a. they stimulated him to write about true human nature under pressure.
b. they influenced the light tone of his writing.
c. they steered him toward writing poetry.
d. they allowed him a positive outlook on mankind.