Arrange these steps in order for correcting a run-on sentence:

Choose the properly punctuated sentence: A. She finished her paper she submitted it on time.B. She finished her paper, and she submitted it on time.C. She finished her paper and she submitted it on time

Electronic ignition controls are used in gas furnaces.

Semiconductors are always metallic.

A diode allows current to flow in:

Electronic ignition is used in:

Defrost boards are used in:

Electronic controls improve:

Which converts AC to DC?

Which component emits light?