Which of the following is another name for methanoic acid?

Methanoic acid is also known as formic acid, which is the correct name among the provided choices. Formic acid is the simplest carboxylic acid, with the chemical formula HCOOH. It is notable for being found in the venom of sting insects, such as ants, which is where its name originates—"formica" is Latin for ant.

Acetic acid, while also a carboxylic acid, is different from methanoic acid; it has a different structure (CH3COOH) and is commonly recognized as vinegar. Citric acid is a tricarboxylic acid (C6H8O7) present in citrus fruits and has a completely different chemical structure and properties. Oxalic acid (C2H2O4) is another carboxylic acid but is known for its role in various biological processes and for its presence in some plants. Therefore, among the choices, formic acid is the accurate and most recognized alternative name for methanoic acid.