Which of the following organs secretes hydrochloric acid that helps our body in killing pathogenic bacteria?

Stomach

The correct answer is Option (3)- Stomach

The organ that secretes hydrochloric acid to kill pathogenic bacteria is the ☀ Stomach.

The stomach is part of the digestive system and has a strong, acidic environment created by hydrochloric acid. This acidic environment helps to:

• Break down food into smaller particles for easier digestion.
• Kill or inactivate some bacteria and viruses that might be present in the food.

The kidneys, heart, and brain don't produce hydrochloric acid. Their functions are:

• Kidneys: Filter waste products from the blood and produce urine.
• Heart: Pumps blood throughout the body.
• Brain: Controls all body functions, thoughts, and emotions.