PLEASE HELP What is the function of the dash in the sentence below?

Then Garth – he's the tall one – caught the pass and scored a touch-down.

A. to follow an introductory element
B. to interrupt
C. to introduce a list
B. to link sentence parts

In this project you will get practice writing sentences of more complexity. here is your goal for this assignment: write sentences containing present and past participles. write sentences containing gerunds. write ten sentences using the following terms as participles: feel, ride, smoke, pray, kneel, sacrifice, steal, talk, hit, and freeze. five of the terms must be used as present participles, while the other five must be used as past participles. then choose five of these verbs to write five sentences containing gerunds or gerund phrases. for these, identify the noun function of each gerund. your project will be graded based on the following: your attention to the instructions given above use of proper punctuation, spelling, grammar, and sentence construction (commonly called "conventions") requirements.