Which of the following kingdoms includes both unicellular and multicellular organisms?

a.

eubacteria

b.

protists

c.

plants

d.

archaebacteria

The correct answer is B. Protists.

Protists belong to the kingdom Protista, Which include both unicellular or multi cellular organisms.

'Uni' means one; Multi means 'multiple' or 'many'.

Single-celled organisms are unicellular.

Many-celled organism are multi-cellular!