Which of the following is a hydride reducing agent?Select answer from the options belowH2ONaBH4NaNH2NH4+

The reducing agent among the options given is NaBH4 (Sodium borohydride).

Here's why:

1. H2O (Water): Water is not a reducing agent. It is a polar solvent and does not have the ability to donate electrons, which is a key characteristic of reducing agents.

2. NaBH4 (Sodium borohydride): Sodium borohydride is a strong reducing agent. It has the ability to donate hydride ions (H-) and thus can reduce other substances.

3. NaNH2 (Sodium amide): Sodium amide is a strong base, but it is not typically classified as a reducing agent.

4. NH4+ (Ammonium ion): The ammonium ion is not a reducing agent. It is a product of the reaction of ammonia (NH3) with a proton (H+), and does not have the ability to donate electrons.

So, the correct answer is NaBH4.