Answer:
the answer to this question is b
Use a paraphraseer. they hep
The answer is C
In taking his army across the Potomac River in early September, Lee had in mind strategic, logistical, and political factors. He believed that the soldiers of McClellan and Pope “lay weakened and demoralized” in the vicinity of Washington, D.C., and he sought to maintain aggressive momentum rather than assume a defensive position and allow the Federals to muster their superior strength to mount another offensive.

part of the environment surrounding humans that contains only physical elements such as :-
1. water.
2. soil
3. air.
HOPE IT HELPED YOU.