Question

The flow of electrons through a circuit is measured in which of the following units? A. electrical pressure B. amperes C. volts D. electrical Current

Answer 1

The total quantity of electrons that have flowed through a circuit is a
quantity of charge, measured in Coulombs, or in Ampere-seconds.

The rate of flow of electrons, or more accurately the rate of flow of
the charge on them, is electrical current.  Its unit is the Ampere. 
1 Ampere is 1 Coulomb of charge per second.