Lactic Acid Buildup in Muscles is a Sign That ________

Question

Lactic acid buildup in muscles is a sign that ________.
A)aerobic respiration capacity has not been reached
B)respiration is operating effectively
C)insufficient oxygen is reaching the muscles
D)the muscles will be able to operate continuously for a long time

Accepted Answer

Lactic acid buildup occurs when there is insufficient oxygen for aerobic respiration, causing muscles to switch to anaerobic respiration, which produces lactic acid as a byproduct.