Which of the following carboxylic acids is a solid at room temperature?

Which of the following carboxylic acids is a solid at room temperature?

Step 1: Understand what carboxylic acids are. They are organic compounds that contain a carboxyl group (-COOH).
Step 2: Know that carboxylic acids can be solid or liquid at room temperature depending on their chain length.
Step 3: Identify the carboxylic acids in the options provided. Look for long-chain fatty acids.
Step 4: Recognize that stearic acid is a long-chain fatty acid with 18 carbon atoms.
Step 5: Remember that long-chain fatty acids like stearic acid are typically solid at room temperature.
Step 6: Conclude that stearic acid is the correct answer as it is solid at room temperature.

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