Please help!!! I'll make you Brainliest!!!

Which of the following is a dependent clause?

a: because they went to school
b: yesterday Luca tried out for the soccer team
c: Jessica rides her bike every day
d: I will see you later?

Which internet search query would most likely produce the best results if you wanted to find information about mammals that live in the rain forest?

a: "rain forest mammals"
b: rain forest not mammals
c: rain forest and mammals
d: rain forest or mammals