Biology, 15.10.2019 07:20 Frenchfries13

After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigued. which is the best explanation for what has occurred?
a. the runner's muscles have accumulated lactic acid.
b. the runner’s body has failed to perform cellular respiration.
c. the runner’s cells are relying completely on aerobic respiration.
d. the runner’s muscles have accumulated carbon dioxide.

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After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigu...