B. Bone denesity because as we age our bones become brittle and can break easily hence why older people often break their wrist or hips when falling. And being fit can help.
Nucleic acids contain DNA and RNA that has genetic information while carbohydrates are a important source of energy.
<h3>What is nucleic acid?</h3>
It should be noted that nucleic acids are important biomolecules that are used in cells and the storage of genetic information.
In this case, nucleic acids contain DNA and RNA that has genetic information while carbohydrates are a important source of energy.
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Answer:
B. Unlike their usual behavior.
Explanation:
The term "lose touch" as used in the text in paragraph 4 means that a person is behaving abnormally, and not like his usual self.
"Losing touch with" something means that a person is losing his identity and becoming something else.
Therefore, the correct answer is B. Unlike their usual behavior.