The consists of protoplasm and a nucleus. vacuole
amoeba
bacterium
pseudopodium

amoeba

Explanation:

Amoebas are organisms that are just basically jelly and a nucleus. There's an attached picture.

That "jelly" is called protoplasm; it's the fluid that makes up the amoeba's body.

Why not A: vacuoles are just protoplasm, no nucleus. they're not organisms.

Why not C: bacteria have no nucleus; they have a nucleoid region.

Why not D: a pseudopodium is an extension of an amoeba, kind of like a retractable arm.

amoeba

Explanation:

they are known to reach a speed of 21 miles per hour

i believe your answer would be c.. : )