I believe that C is the correct answer
Proper nouns are nouns that name specific people, places, things, or ideas. Think of proper as meaning specific.
America, English, Paris
Notice that proper nouns always begin with a capital letter.
Proper adjectives are adjectives that are formed from proper nouns. Most of them identify people, places, languages, or groups.
American cars, English grammar, Parisian scarf
Notice that these adjectives are still performing the job of an adjective: They are all describing nouns. Also, notice that they all begin with a capital letter.
Answer:
Because it "Enables muscles to coordinate in a more-efficient manner, ensuring the body utilises less energy, thus eliminating...
Holds the spinal joints in place, which is essential in maintaining a good posture. With less stress on the ligaments,...
Aids in preventing back and muscular pain, all which are signs of a poorly relaxed body."
Explanation:
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