All living organisms, including animals, plants, fungi, bacteria, and protists, must perform certain processes in order to survive. For example, all living organisms must be able to obtain energy so they can use that energy to perform their life functions. In what part
of a living organism do these life functions occur?

the cell im assuming. wait for another answer tho because I could be wrong

D. cells

Explanation: Green plants and some bacteria and protists obtain energy by absorbing light energy from the Sun to make sugar, a process known as photosynthesis. Animals, fungi, and other bacteria and protists obtain energy by consuming plants or other organisms. Then, once the energy is obtained, the energy is released through a process known as cellular respiration.

These life functions (e.g., waste breakdown and removal, growth and division, transport, respiration) occur in the cells of organisms, and these functions are similar in different organisms.

the answer is 100% density i've answered this question before and done the quiz myself.