Unification- the process of being united or made into a whole.
C. ocean currents affect temperatures on land. ocean currents act as a conveyer belt by transporting warm water and precipitation to the poles and cold water to the tropics.
The economic model Brazil fit into regarding its development path would be Gross Domestic Product Improvement. GDP of Brazil will measure three sides of its economy and that would be their expenditure, output, and income.
The answer to your question is letter A.