Species belonging to the kingdom Archaea differ from species belonging to the kingdom Protista in that Archaea tend to A have a true nucleus that houses the cell's DNA. B contain cells that have more membrane-bound organelles than Protista. C be found in extreme environments like hot springs, deep oceans and swamps. D contain both multi-celled and single-celled organisms that have membrane-bound organelles.

C. be found in extreme environments like hot springs, deep oceans and swamps.

Explanation:

Archaea are different from protista because they are found in extreme environments like hot springs, deep oceans and swamps.

Archaea represent a group of single celled organisms similar to the bacteria while protists represent a group of animal-like unicellular organisms.

Archaea are prokaryotic in that their cells lack nucleus and membrane bound organelles unlike protists which are eukaryotic with distinct nucleaus and membrane-bound organelles like mitochondrion.

Hence, options A, B and D are not true for archaea.

The correct option is C.