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Question:

Our bodies naturally change because of the aging process. Of the following options, which is NOT a normal biological change?

A The ability to make decisions weakens.
Explaination

A patient who do not have the ability to make decisions would be linked to disease rather than to a normal biological change.  Biologically, during the aging process, bones become thinner and weaker.  Joints become stiffer and less flexible and the movement of food through our digestive system slows down.  These are all normal biological changes.