The question asks about the purpose of application software. Let us analyze each option:
- (A) is used to control the operating system:
This is incorrect. Application software does not control the operating system. Instead, the operating system manages and controls the hardware and provides a platform for running application software.
- (B) is designed to help programmers:
While some types of application software (e.g., integrated development environments like Visual Studio or Eclipse) are specifically designed to assist programmers, this is not the primary purpose of all application software. Therefore, this is not the correct answer.
- (C) performs specific tasks for computer users:
This is correct. Application software is designed to perform specific tasks for end-users. Examples include word processors (e.g., Microsoft Word), spreadsheets (e.g., Microsoft Excel), media players, and web browsers. These programs are tailored to meet the needs of users for various tasks.
- (D) is used for making design only:
This is incorrect. While some application software (e.g., graphic design tools like Adobe Photoshop) is used for design purposes, application software encompasses a wide range of functions beyond just design. Therefore, this is not the correct answer.
From the analysis above, the correct answer is:
\[
\boxed{\text{(C) performs specific tasks for computer users}}
\]