Immediately after its stored atp is consumed, a working muscle relies on to regenerate atp for contraction. anaerobic glycolysis direct phosphorylation of adp by creatine phosphate aerobic respiration all three energy systems in equal amounts

Immediately after its ATP is consumed, a working muscle relies on DIRECT PHOSPHORYLATION OF ADP BY CREATINE PHOSPHATE to regenerate ATP for contraction.
There are three different systems which provide energy for a working muscles depending on the duration of the work that the muscle is doing. Immediately the stored ATP in a muscle is consumed, the first system that will be activated for production of ATP is direct phosphorylation of ADP to ATP. Followed by anaerobic glycolysis and gluconeogenesis.

The answer is c i think