Answer:
C. Environments and society’s
Explanation:
As a geographer, the essential element you would be studying if you used this map to study locations is environments and society’s. This is because, geography is about environment and society.
D) the Tigris, Euphrates, and Nile
Those are the only rivers listen that are in the middle east
Explanation:
The question is incomplete.
However a standard method to dertmine how workload effects health is developed and is called Harvard step test.
The Harvard Step Test is a fitness test method devised to measure heart and respiratory fitness. It is done by giving some work load to a person for 5 minutes (normally) and then noting his heart rate afterwards in some intervals.
Formula is;
Fitness Index = (100 x test duration in sec) / (5.5 x pulse count between 1 and 1.5 mins)
The answer to this question is the Indus River. Hope that I could help!