Identify product in the reaction
This is the Birch reduction where a highly reactive alkali metal is dissolved in ammonia reduces the hydrocarbon via single electron transfer mechanism.
The nature of the final product depends on the nature of the substituent. Since the carboxylic acid is electron withdrawing in nature, we get the above product. Had there been an electron donating group in place of the −COOH group, we get a slightly different kind of product. Observe this: