Answer
B. The soap has a polar end that can interact with the water and a nonpolar end that can interact with the oil.
Explanation
In the case of soap, the carbon chain dissolves in oil and the ionic end dissolves in water. Thus, the soap molecules form structures called micelles. In micelles, one end is towards the oil droplet, and the other end which is the ionic faces outside.
Hence, the correct answer is:
B. The soap has a polar end that can interact with the water and a nonpolar end that can interact with the oil.