Biology

The correct answer is: B.Lipids.

Explanation:

1.Fatty acids, butter, oils, and phospholipids are all examples of lipids.

2.Fatty acids are the building blocks of many lipids, such as triglycerides (fats and oils).

3.Butter and oils are types of lipids, specifically fats and triglycerides.

4.Phospholipids are another type of lipid, crucial for forming the structure of cell membranes.

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