Moving higher in altitude results in:

thinner air and, thus, cooler temperatures

denser air and, thus, cooler temperatures

thinner air and, thus, warmer temperatures

denser air and, thus, warmer temperatures

Answer...

Thinner Air and, thus, cooler temperatures.

Explanation...

The higher you go the thinner the air gets. It's why it's hard to breathe at such altitudes. As well, it gets colder the higher you go because the air pressure decreases.

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.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .