We rode our bikes to meet them at the lake. Which part of the sentence is the subjective pronoun?

We is the subjective pronoun because a subjective pronoun acts as the subject of a sentence. In this case, we is the subject.

"We" is the subjective pronoun.

What "subjective" means is that the word is serving the function of the subject of the sentence, which means it is performing the action of the sentence. As you may know, only nouns and pronouns can serve as a sentence’s subject. That said, there are three pronouns within the sentence. "We," which is the subject. "Our," which is a possessive pronoun/adjective because it is being used to describe "bikes." And, "them," which is a pronoun serving as the direct object.