Energy can be described in many ways. From the list below, what is the best definition of energy?

the strength and vitality required for sustained physical or mental activity.

"changes in the levels of vitamins can affect energy and well-being"

synonyms: vitality, vigor, life, liveliness, animation, vivacity, spirit, spiritedness, verve, enthusiasm, zest, vibrancy, spark, sparkle, effervescence, ebullience, exuberance, buoyancy, sprightliness; More

2.

power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.

Have a great day ~Matya

There are no good descriptions or definitions of energy on the list of choices you provided. A big part of the reason for this is that you didn't provide any list of choices.

In Physics, the definition of 'Energy' is 'The ability to do work'.