Olive oil contains unsaturated fat. It is a liquid at room temperature because 1)

the fatty acids do not contain carbon-to-carbon double bonds.

2)

carbon-to-carbon triple bonds exist within the fatty acids.

3)

the fatty acids are packed very tightly together.

4)

carbon-to-carbon double bonds are found within the glycerol.

5)

carbon-to-carbon double bonds exist within the fatty acids.