With age, muscles can become weaker. this is due to a. connections between nerves, which cause more pain and therefore less use b. damage from everyday use and injuries that accumulate over time c. disconnections between motor nerves and muscle fibers d. difficulties that occur during muscle growth and repair

The correct answer is C. disconnections between motor nerves and muscle fibers.

Explanation:

Weakness refers to the loss of muscle strength. That is, the affected person cannot move a muscle normally despite trying with all his might. However, the term is often used incorrectly. Many people with normal muscle strength say they feel weak when fatigue is the problem or when their mobility is limited due to joint pain or stiffness. Muscle weakness may be a symptom of a neurological dysfunction.

1. cold turkey (no outside ). about 90% of people who try to quit smoking do it without outside support -- no aids, therapy, or medicine. although most people try to quit this way, it's not the most successful method. only about 5% to 7% are able to quit on their own.

2. behavioral therapy. this involves working with a counselor to find ways not to smoke. together, you'll find your triggers (such as emotions or situations that make you want to smoke) and make a plan to get through the cravings.

3. nicotine replacement therapy. there are several types, including nicotine gum, patches, inhalers, sprays, and lozenges. they work by giving you nicotine without the use of tobacco. you may be more likely to quit with nicotine replacement therapy, but it works best when you use it with behavioral therapy and lots of support from friends and family. and remember that the goal is to end your addiction to nicotine, not simply to quit using tobacco.

explanation:

mark brainliest

the trait of personality falls in the middle of the diagram because personality is a mixture of ones nature and environment.