Which type of thermal energy transfer occurs mostly in fluids?
insulation
radiation
convection
conduction

Convection - is your answer.

Explanation:

Convection is by far the most efficient and common way for heat to be transferred through liquids and gases. It occurs when some regions of a fluid get hotter than others, causing currents in the fluid that move it around to distribute that heat more evenly. That's what I found on the internet

i sometimes feel that way too. i feel that i should hurt someone because they hurt me, but i wouldnt do it. that would make things so much worse i have so much experience with this stuff

explanation:

it doesn't. it was imagined up in the middle ages.