Choline is <em>a) a conditionally essential nutrient.</em>
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).
-if it is a website, look for .gov. -look for direct facts, never trust opinions. -they must have cited evidence, if its not cited it can't be trusted.
In adults aged 20 and older, the average daily vitamin K intake from foods is 122 mcg for women and 138 mcg for men. When both foods and supplements are considered, the average daily vitamin K intake increases to 164 mcg for women and 182 mcg for men.
If the sperm gametes that fertilizes an egg has an XX chromosomes, it will form female offspring. X is a female, XY is a female, Y is a male and XX is a female.