The -COOH attached to the CH3 is the acid functional group.
What is a functional group?
The term functional group refers to the atom, group of atoms or bond which accounts for the chemical reactivity of a compound.
The acid functional group is known by the formula -COOH. In this case, we can see that the -COOH attached to the CH3 is the acid functional group.
Learn more about functional group:https://brainly.com/question/14618322
#SPJ1
