I believe that the answer is B
It would be a or d because it was during in the byzantine time
Harrison's presidency saw the addition of six new states, more than any other president.
All these countries and the Andes themselves are extremely
rich in the natural resources. They have it all: wood, oil, gas, copper,
salt, lithium, ore, precious metals like gold to name the few. Unfortunately,
due to unstable political situation in these countries and poor working
conditions its hard to reach all of this natural wealth.
B. the information statues as primary and secondary
D. The informations topic and tone