Answer:
The question is not complete, as none of the clauses in the sentence are underlined, however, I will give you the type of each of the two clauses:
Because he ran: (subordinate clause)
he was able to catch the bus. (independent clause)
Step-by-step explanation:
A clause is a part of a sentence, and a clause contains a verb.
Subordinate/dependent clauses are clauses that cannot stand alone when isolated from a sentence, and still make complete sense, instead, they help to give further meaning to the main/independent clause. In this case "Because he ran", is not a complete thought on its own, as it leads to asking the question "so what?"
Independent/main clauses can stand alone and still make sense. In this example "he was able to catch the bus" can stand alone and still make sense.