Answer:
tetra-.
Step-by-step explanation:
- In IUPAC system, when naming molecular compounds prefixes are used to dictate the number of a given element present in the compound:
” mono-” indicates one,
“di-” indicates two,
“tri-” is three,
“tetra-” is four,
“penta-” is five,
“hexa-” is six,
“hepta-” is seven,
“octo-” is eight,
“nona-” is nine,
and “deca” is ten.
So, the right choice is: tetra-.