Concept:
In web application development, a software stack refers to a collection of technologies that work together to build, host, and run dynamic websites and web applications. A typical web stack consists of four major components:
• An Operating System
• A Web Server
• A Database Management System
• A Server-Side Programming Language
WAMP is one of the most widely used software stacks for developing and testing web applications on Windows-based systems.
Step 1: Understanding the acronym WAMP.
The acronym WAMP is formed from the first letter of each software component included in the stack.
\[
W = \text{Windows}
\]
Windows serves as the operating system platform on which the entire stack runs.
\[
A = \text{Apache}
\]
Apache is a popular open-source web server responsible for handling HTTP requests and serving web pages to users.
\[
M = \text{MySQL}
\]
MySQL is a Relational Database Management System (RDBMS) used for storing and managing application data.
\[
P = \text{PHP}
\]
PHP is a server-side scripting language used for generating dynamic web content and interacting with databases.
Step 2: Examining each option.
• Option (A): Windows, Apache, MySQL and PHP --- All four components are correct.
• Option (B): Word and Adobe are not components of the WAMP stack.
• Option (C): Mainstream and Program are not recognized technologies in the WAMP acronym.
• Option (D): Adobe incorrectly replaces Apache.
Step 3: Selecting the correct answer.
Since WAMP officially stands for:
\[
\boxed{\text{Windows, Apache, MySQL and PHP}}
\]
the correct option is:
\[
\boxed{(A)}
\]