The air near a heat source gets hot and rises. The air from the sides comes in take its place

The air near a heat source gets hot and rises. The air from the sides comes in take its place. This is the way in which the air gets heated by oil heaters. What is this process called?
(a) Diffusion
(b) Conduction
(c) Convection
(d) Radiation

Anurag Mishra Professor Asked on 24th February 2016 in Science.
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