Final answer:
A linking/helping verb connects the subject of a sentence to a noun, pronoun, or adjective that renames or describes the subject.
Step-by-step explanation:
A linking/helping verb is a verb that connects the subject of a sentence to a noun, pronoun, or adjective that renames or describes the subject. In this case, the word 'heel' is a linking/helping verb. For example, in the sentence 'She is a doctor,' the verb 'is' acts as a linking verb connecting the subject 'She' to the noun 'doctor'.
Learn more about Linking/Helping Verbs