What was the main purpose of crude oil in the united states before the advent of the automobile?

It was used for lightning in the form of kerosene.

Explanation:

The first oil well was dug by Edwin Drake in Pennsylvania in 1859 and he distilled the oil to produce kerosene which was used for lightning.

Edwin Drake also produced other petroleum products from the distillation but there was no use for them as at that time not until in 1892 when Automobile was invented and gasoline one of the distilled petroleum products was recognized as a valuable fuel

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.

sir frederic attributed inaccuracies to schemas. memory reconstruction is one part actual events and one part personal schema, which can result in inaccuracies when memories are reconstructed.