What causes a bolt of lightning?
AElectrical charges build up in the clouds only.
BElectrical charges build up on the ground only.
CElectrical charges build up in the clouds and on the ground.
DElectrical charges build up in the space between the clouds and the ground.
AElectrical charges build up in the clouds only.
BElectrical charges build up on the ground only.
CElectrical charges build up in the clouds and on the ground.
DElectrical charges build up in the space between the clouds and the ground.