Answer:
A. Mantle
Explanation:
Mantle is the process that drives plate tetonics, thus being that layer of the Earth.
Every doctor you meet should know your family history with health anyway just incase if something were to happened they'll already know. and if heart disease runs in Simon's family there's probably a 50/50 chance he might likely have it too depending so D would be the answer
The first one, Added removed or changed. Mutation as in anything that would cause the slightest change.
Of course not , also thanks for the free points :)
