The digestive system as it is the only system associated with consuming food.
Anything that relates to sexual reproduction (gametes coming together to fertilize) should be crossed off.
Not much context was provided but you can look back to some other questions I've answered, I have a full in-depth answer to the same question another person had.
The correct answer is "knee j*rk reaction". The knee j*rk reaction is a type of reflex wherein nerve impulses from the muscle does not have to reach the brain for the appropriate motor response of the body. Reflexes are important as to shorten the response time especially in times when a long response time will harm the body.
The stamen of a flower <span>is the pollen-producing reproductive organ in a flower. (found at the bud)</span>
Hello I have found the following Prefrontal cortex hope this helps