Joseph conrads heart of darkness
a horn tooted to the right, and i saw the black people run. a heavy and dull detonation shook the ground, a puff of smoke came out of the cliff, and that was all. no change appeared on the face of the rock. they were building a railway. the cliff was not in the way or anything; but this objectless blasting was all the work going on.

what idea about colonialism is most clearly expressed in this excerpt ?

a. the colonists cruelly harm human beings for no reason

b. colonists are essentially fearful and cowardly creatures

c. the actions of the colonists are foolish and ineffective

d. most explosives are needed in order to tame africa