Question

Many words in English are formed by adding a prefix or a suffix to them, like originally, incurable and epidemiologic.
Mark the alternative in which the words do not the a prefix or a suffix.

a.
blindness, autoimmune, ability.

b.
disorder, healthy, unknown.

c.
commonly, treatable, potentially.

d.
permanent, paralysis, expert.

Answer 1

a. Ability

b. healthy

c. Treatable

d. Permanent