Collagenopathies, conditions characterized by the production of one or more types of defective collagen proteins, are in a group of disorders called connective tissue diseases. many collagenopathies feature arthritis or other join problems as part of the symptoms of the disorder. why would defective collagen proteins affect an individuals joints.

Collagenopathies refers to a group of disorders, which influences connective tissues. Connective tissues help to support the body's organs and joints. Collagens are the composite molecules, which offer strength, structure, and elasticity to the connective tissue.  

The collagens are the constituents of the cartilage witnessed in joints. Therefore, defective collagen proteins lead to a defect in strength, structure, and elasticity of the connective tissue that eventually influences a person's mobility and stability.  

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

option c is the correct answer.