Answer:
Choline is a) a conditionally essential nutrient.
Step-by-step explanation:
Choline corresponds to a nutrient present in many foods (eg, egg yolk, liver, beans), necessary for the nervous system in memory regulation, mood, learning, muscle control. It corresponds to the precursor for neurotransmitter synthesis (eg. Acetylcholine) and participates in the synthesis of celular membrane precursors (phospholipids, phosphatidylcholine, and sphingomyelins).