What is the best response to sirmulus

Hmm.

Explanation:

An organism's best response to a stimulus is Dog barks when there are fireworks.

'Stimulus: any change in an organism's environment that causes the organism to react. It is a fancy way of saying “cause”. Example: An animal is cold so it moves into the sun.'

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

answer///multiple alleles;