C. Peninsula. An island is surrounded by water and an archipelago is just a collection of islands.
The Blue Nile begins at Lake Tana in Ethiopia and flows into Sudan from the southeast. The two rivers meet just north of the Sudanese capital of Khartoum. The northern section of the river flows north almost entirely through the Sudanese desert to Egypt, then ends in a large delta and flows into the Mediterranean Sea.
The economic health of Egypt will be affected by its population as (B) it will need to grow its economy faster than its population. As the population grows, with increasing birth rates, the economy needs to grow bigger in order to support the food, work and health needs of the populous.