Because there are other wind directions to take it other places
A. Igneous Basalt Rock
Mid-oceanic ridge volcanoes produce basalt. The centers of the continents are composed mainly of coarse-grained, light-colored rocks like granite.
I believe C is the answer, may be wrong though.
A tsunami will reach land and hit the land with a massive amount of water and will topple over small structures, flip cars and move them like dust in the wind. The tsunami can go far into land up to about 8 miles. The tsunami is most likely caused by an earthquake out at sea.
Options A and D are true. The other two options are absurd and not even based on fact while A & D are true concerning this part of Africa at that time.