Answer the following question given this paragraph: 

Triglycerides function as a long-term storage form of energy in the human body. Because of the long carbon chains, triglycerides are nearly nonpolar molecules and thus do not dissolve readily in polar solvents such as water. Instead, oils and fats are soluble in nonpolar organic solvents such as hexane and ethers.


Q: What substances function as a long-term energy store in the human body and possess long carbon chains that prevent dissolving in water?

 Choices:

- hydrocarbons

- steroids

- nanoparticles

- triglycerides

A:
triglycerides
