Which food is not a heterogeneous mixture?

a. chocolate chip cookies

b. oil and vinegar dressing

c. cooking oil

d. trail mix

Well it's definitely not trail mix or chocolate chips so it would be so it's oil and vinegar dressing

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Good luck

Option C cooking oil is not heterogenous mixture

Explanation:

Mixture is a combination more than two substances and are not chemically combined.

It is of two types Homogenous mixture and heterogenous mixture

Homo means "same".

Hetero means" different"

Homogenous mixture is a mixture which looks uniform throughout

Examples Cheese, salt solution, air, 18 carat gold

Heterogenous mixture is a mixture which looks non uniform throughout

. Examples Pizza, trail mix, salad, A mixture of oil and water