The word "I" in the sentence "(I) like to paint model cars." is not an object pronoun. It is a subject pronoun, as it is used to refer to the person who performs the action of liking to paint model cars. Object pronouns, on the other hand, are used as the direct or indirect objects of a verb or as the object of a preposition. Examples of object pronouns include "me," "you," "him," "her," "it," "us," and "them." Therefore, the correct answer is "no."
