Question

question what is the purpose of testing distilled water without an antacid? water is a positive control. water is neutral. water is a negative control water is an antacid found naturally in the body

Explanation:

In scientific experiments, a negative - control is a sample that should not show a response. Distilled water without an antacid is used to establish a baseline or to show what happens in the absence of the variable (antacid). It helps to determine if any observed effects are due to the antacid or other factors. Water is not a positive control (which shows a known positive response), and it is not an antacid. While water is neutral, that's not the main reason for testing it in this context.

Answer:

Water is a negative control