Aplastic that is composed of a saturated hydrocarbon would have molecules that are most like those in which material?
asphalt
lubricating oil
natural gas
gasoline

The answer is: asphalt.

Plastic is organic polymers of high molecular mass derived from petrochemicals.

Asphalt (bitumen) is a sticky, black and highly viscous liquid or semi solid form of crude oil.

Crude oil is mixture (solution) consist of several different hydrocarbons (alkanes, alkenes...).  

This hydroalkanes can be separated from mixture (crude oil) using distilation (usually fractional distillation), because they have different boiling points.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.