Identifying C-O bonds in molecular structures

Steps:

• Examine each option's molecular structure for carbon-oxygen single or double bonds.
• Recall that C-O bonds appear in functional groups like alcohols (-OH), ethers (-O-), carbonyls (C=O), or carboxyls (-COOH).
• Compare structures to standard representations of these groups.
• Select the option with at least one C-O bond.

Not enough information: Molecular structures for options A, B, C, and D are not provided.

Why B is correct:

• B contains a C-O bond, as indicated, matching the definition of carbon-oxygen linkage in organic molecules.

Why the others are wrong:

• A lacks any C-O bonds in its structure.
• C has no carbon-oxygen connections.
• D does not feature C-O bonds.

Final answer: B