The first three options I see are all making-decision process to take action, but the last one is the one that is not like that. Researching is something that is not so close in meaning to what you need. That is why, D is a good option.
When civil war took place between Eritrea and Ethiopia many people traveled to Sudan and put up camps.
Explanation:
Many refugees settled in Sudan as the civil war between Ethiopia and Eritrea for a prolonged period of time. These camps in Sudan had very harsh environment as well as there was scarcity of clean water and medicines.
Not only the civil war was the main reason why people migrated to Sudan as refugees but there were several other reasons they were violence took place between the population based on political as well as ethical lines, subsequent famine and lastly due to drought.
Motives for Exploration - Wealth and Religion. The motives for Spanish, French and English explorers were all different, although in some ways, they were the same. They all wanted to find the Northwest Passage, which they believed was a direct and efficient route to the Orient - home of spices, silks and wealth.
The answer is the middle one
