A possible result of poor muscle strength is back pain. Thus, the correct option is A.
What is Muscle strength?
Muscle strength may be defined as the ability of your muscles that lift an amount of force easily.
Poor muscle strength may be illustrated that your muscles do not have the capability to lift a high amount of force. But when it is made unknowingly it causes back pain, injury, weaknesses, etc.
Therefore, the correct option is A.
To learn more about Muscle strength, refer to the link;
https://brainly.com/question/16225402
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