Question

which excerpt from a lab report is more formal? this experiment focused on the energy requirements of the human body. this is an experiment where we looked at how the body needs lots of energy.

Explanation:

The first excerpt uses more precise and objective language typical of formal lab - reports. "Focused on" and "energy requirements" are more formal than "looked at" and "lots of energy".

Answer:

This experiment focused on the energy requirements of the human body.