Afolic acid deficiency would interfere with the synthesis of which of the following amino acids from the indicated precursors?
a. aspartate from oxaloactetate and glutamate
b. glutamate from glucose and ammonia
c. glycine from glucose and alanine
d. proline from glutamate
e. serine from glucose and alanine

I believe the answer is b. glutamate from glucose and ammonia

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.