Which of the structures below represents a fat?

The right answer is A glycerol molecule with three fatty acid chains attached to it.

This structure is called triglycerides (glycerol + 3 fatty acids).

Triglycerides are part of the cholesterol of lipid compounds or fats of the body. They are the main energy reserve of the body and are therefore beneficial for staying in shape, provided that the blood levels are in the normal range. When triglyceride levels are high, cardiovascular risk increases.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements