Final answer:
Bones not subjected to ordinary stresses become weaker and more brittle because they do not undergo the natural strengthening process of bone remodeling that occurs with stress.The correct option is 1.
Step-by-step explanation:
Bones that are not subjected to ordinary stresses, such as those immobilized in a cast, will become weaker.
This phenomenon is part of the natural process of bone remodeling, which allows bones to adapt by becoming thicker and stronger when subjected to stress. However, without normal stress, bones can lose mass and strength.
Moreover, in the absence of the regular load and stress, bones may not only become weaker but potentially more brittle, which means they could be more prone to fractures.
When considering the behavior of bones under tension and compression, it's evident that they are designed as weight-bearing structures, similar to columns in buildings or trees with fibrous structures for support.
Hence, when the bones do not experience the necessary stresses, they can undergo changes, potentially leading to abnormal bone formation characterized by thinner and shorter bones, possibly affecting stature adversely.The correct answer is option 1.