Which one of the following choices is a biomarker of biological again that can you determine whether or not you’re doing better or worse than your chronological age?
a. skin elasticity
b. neoplasm development
c. breath-holding ability
d. susceptibility to extreme temperatures

A. Skin Elasticity

Skin elasticity is a biomarker of a biological gain that can help you determine whether or not you're doing better or worse than your chronological age. As we grow older, our skin loosens and this is an indication of our age. Today, there are new technologies that can help you tighten your skin and maintain your youthful appearance

a1 = unhealthy

a2= healthy

a3= healthy