What type of word begins the following sentence fragment Thinking about the weekend. a. An infinitive b. A present participle c. A verb d. An adjective e. An appositive?

The sentence fragment "Thinking about the weekend" begins with a present participle. Present participles are formed by adding "-ing" to a verb, and in this case, "thinking" is the gerund form of the verb "think," functioning as the main Word in the fragment.