What distinguishes predicate logic from propositional logic?

Question $5$Answer

a$.$

Propositional logic is not constrained by simple assertions, whereas declarative logic is

b$.$

Quantifiers are used in propositional logic but not in predicate logic.

c$.$

While propositional logic excludes quantifiers and relations, predicate logic does

d$.$

Predicate logic and propositional logic are basically the same.