Which substance is most likely a lipid?

long chains of molecules composed of carbon, hydrogen, and oxygen atoms

compounds that are composed of amino acids and atoms, such as nitrogen, that are joined together by peptide bonds

a nonpolar organic compound that is insoluble in water

a molecule that constitutes the building blocks of more complex molecules that are soluble in water

Answer: -

A non polar organic compound that is insoluble in water

Explanation: -

Lipids are fatty acids and their derivatives. They are hydrophobic in nature meaning insoluble in water. They store energy and used for signaling.

They are generally oils, steroids and waxes. The endoplasmic reticulam of the cell is the main site for lipid synthesis for both plants and animals.

Thus lipids are fatty acids and their derivatives. They are insoluble in water.