The answer is actually Complex drainage systems to keep structures from flooding.
answer B: because if you want to have good information you want to have a educated person doing it, plus you don't want a someone who doesn't know what they're talking about writing it and you getting wrong info.
The CCC (Civilian Conservation Corps) employed about 30,000+ people, who helped build things like dams, roads, bridges, fences, signage, and campgrounds in South Carolina.
Unitary form of government would avoid this characteristic.
Option: A
Explanation:
Unitary form of government is the system of government which have the supreme power over the every branches of administration means executive, judiciary etc. It finalize the decision of its subordinate classes of governments. Here laws for crimes do not differ from state to state.
In confederate, presidential, parliamentary system of government each branches are assigned with its own duty and it has no power on the decision of other branches. So the decision may vary from state to state. Senate and house of representatives take decision separately for every political feature.
