Find the odd number / letters / word from the given alternative:

The answer is C. Led.

A, B, and D are all words that can be used as nouns, verbs, or adjectives. C, however, is only a verb.

Head can be used as a noun to refer to the top part of a person’s body, or as a verb to mean “to be in charge of something.” Heed can be used as a noun to refer to attention or care, or as a verb to mean “to pay attention to something.” Heap can be used as a noun to refer to a large pile of things, or as a verb to mean “to pile something up.” Led can only be used as a verb to mean “to guide or direct someone or something.”