What is the dependent clause in this sentence?

Since I love to swim, I spent every morning at the pool.

a
Since I love to swim
b
I spent every morning at the pool
Question 14 (1 point)
What is the independent clause in this sentence?

I swam 100 laps each morning while I was at the pool.

a
I swam 100 laps each morning
b
while I was at the pool