Question

complete the sentence with the best relative pronoun. i had several questions for the salesperson demonstrated the blender.

Explanation:

To determine the correct relative pronoun, we analyze the sentence structure. The clause "demonstrated the blender" modifies "the salesperson" (a person). For people, the relative pronoun "who" is used when the pronoun is the subject of the relative clause. Here, the salesperson is the one who performed the action of demonstrating, so "who" is appropriate.

Answer:

who