Respuesta :

A. freshwater fishing.

my reasoning:

Inside the Middle East, most countries have large supplies of oil, (which helps make the countries rich as they are today because of oil demands), which takes out the options C & D. The Middle East, is located within the Sahara desert, and so can contribute to desert research (B) as well.

So A, is your most logical choice.

hope this helps
A - Freshwater fishing

This is because the Middle East is typically considered a dry, desert like place (this also makes b an incorrect answer). On top of that, the Middle East is known for oil production and trade. Therefore, through process of elimination and geography, A would be the correct answer.

Hope this helps!