Final answer:
The compound SF6 is correctly named sulfur hexafluorideb(option B), which indicates that it contains one sulfur atom and six fluorine atoms.
Step-by-step explanation:
The correct name for the compound SF6 is sulfur hexafluoride. When naming covalent compounds like SF6, prefixes are used to designate the number of atoms of each element present in the compound. The prefix 'hexa-' indicates there are six fluorine atoms bonded to a single sulfur atom, hence the name sulfur hexafluoride. This follows the same naming pattern as other covalent compounds like dinitrogen trioxide (N2O3) and dichlorine heptoxide (Cl2O7).