Answer: Well if you look at the questions all of these are plans so im not exactly sure but the most valid answer ould be ( B )
Astronauts in the future are planning to expllre mars because they think that it is possiable for humans to live on the planet mars.
Hope this helps in some way have a great rest of your day :)
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.
