Which of the following is a strong reducing agent used to reduce aldehydes, ketones, esters, carboxylic acid chlorides, carboxylic acids and even carboxylate salts to alcohols?

Lithium aluminum hydride

The correct answer is option 2. Lithium aluminum hydride.

The strong reducing agent used to reduce aldehydes, ketones, esters, carboxylic acid chlorides, carboxylic acids, and even carboxylate salts to alcohols is Lithium aluminum hydride (LiAlH₄).Therefore, the correct option is: Lithium aluminum hydride