Which of the following sentences contains both an independent clause and a dependent clause? ILL GIVE BRAINLIEST A
Coiled under a rock was a large rattlesnake.

B
When he finished eating, Manny cleared his plate.

C
Lila yelled for help, and someone came to rescue her.

D
The children scrambled up the ladder and slid down the chute.

B

Explanation:

it starts with when so it's dependant and "Manny cleared his plate" can stand on its own

the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).