Final answer:
The common name for the compound shown, methanoic anhydride, is formic acid anhydride.
Step-by-step explanation:
The common name for the compound shown, methanoic anhydride, is a) Formic acid anhydride. Methanoic acid is also known as formic acid, and adding 'anhydride' to the end indicates that it is the anhydride form of formic acid.