6. the terms ac, al, ary, and ic are all
a. noun suffixes indicating procedures.
b. pseudosuffixes formed from roots.
c. adjective suffixes meaning "pertaining to."
d. prefixes that function as prepositions.

Option C.

They are adjective suffix meaning pertaining too.

Explanation:

Suffix is a word that is attached to the root or stem of a word to change its general meaning.

An adjective suffix refers to letters added to the root of a noun to qualify it.

Ac, Al, ary and ic are all adjective suffice that meaning pertaining too or having the character of the named stem word.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.