COMPTIA A+ Practice Exam 2025 - Free CompTIA A+ Practice Questions and Study Guide

An MSDS stands for Material Safety Data Sheet, which is a document that contains information on the potential health hazards of a chemical product, safety precautions for its handling, and what to do in case of an emergency. This document is important for workers who may come into contact with the chemical, as well as for emergency personnel responding to a spill or accident. Option B, Modular System Design Specification, is a term used in engineering and is not related to material safety. Option C, Main System Data Store, refers to a database and is not specific to safety information. Option D, Mechanical System Diagnostic Software, may provide some information on safety precautions for the mechanical systems, but it does not cover all aspects of a material that could potentially be hazardous. Overall, option A is the best answer as it accurately describes the purpose and content of an MSDS.