Which root indicates a meaning related to 'to beat'?

The root that indicates a meaning related to 'to beat' is found in the term that signifies striking or hitting something. In this case, "bat" serves as a base word that embodies the concept of beating, particularly as it relates to physical actions such as hitting a ball in sports, which directly reflects the meaning of the root.

Exploring the options further: "beat" is a direct relation to the action of hitting or striking, but here it is not the root form used to derive further meanings. "Combat" refers to a fight or struggle, typically involving direct confrontation, which involves beating in some contexts but does not explicitly signify the act of beating itself as a root. "Defeat," while associated with the concept of overcoming an opponent, does not specifically denote a direct meaning related to the act of beating but rather the result of a contest.

Through this understanding, "bat" correctly represents the meaning associated with the action of to beat, while the others reflect different contexts or outcomes related to conflict or sports.