Question

Aging affects all of the body's cells; and therefore, the basic building blocks of tissues. All cells in the body experience changes with aging. As your body ages,_______________ changes, becoming stiff making the organs, blood vessels, and airways more rigid.
A) bones
B) muscle
C) cartilage
D) connective tissue

Answer 1

Bones: they lose calcium, becoming crispy
Muscle: they lose mass 
Cartilage: becomes stiffer, but it does not make airway more rigid
D) connective tissue: It includes bone, blood, and lymph tissue, giving support to the skin and internal organs, becoming increasingly stiff when aging.
It should be connective tissue.

Answer 2

The right option is; D) connective tissue

Aging affects all of the body's cells; and therefore, the basic building blocks of tissues. All cells in the body experience changes with aging. As your body ages, connective tissue changes, becoming stiff making the organs, blood vessels, and airways more rigid.

Connective tissue are important group of tissues that support, and connects other tissues in the body. Connective tissue maintains the body structure and its organ, and also transports substances in the body. Connective tissue is mainly made up of two elements which are; cells and a matrix. The connective tissues include various types of fibrous tissue that differ in cells, density, and functions. They include; tendons, bone, cartilage, ligaments, and adipose (fat) tissue.