Correct Answer: Energy

Solution : The correct answer is Energy.

Planck's constant (ℎ) has dimensions of energy multiplied by time. In terms of units, it is commonly expressed in joule-seconds (J·s) in the International System of Units (SI). It can be expressed as [ℎ] = [E] × [t] where:

[ℎ} is the dimension of Planck's Constant,
[E] is the dimension of energy,
[t] is the dimension of time.