Organic Chemistry - Quiz 3

This quiz for this week is on organic chemistry. You may like to revise the chapter on alkanes and alkenes, as well as the chapter on alcohols, carboxylic acids, esters and macromolecules first before attempting the question.
Which of the following monomers cannot form polymers by itself?

a. CH₂=CHCH₂COOH

b. NH₂CH₂CH₂COOH
c. CH₃CH(OH)CH₂COOH
d. COOHCH₂CH₂COOH