Explanation:

Java is widely used for developing multimedia webpages because:

• It supports applet-based web applications.
• It has powerful graphics and animation capabilities.
• It allows cross-platform compatibility, making it ideal for web-based multimedia applications.

Other Options:

• (A) COBOL → Used mainly for business, finance, and administrative systems.
• (C) BASIC → An older language mainly used for simple programming and learning.
• (D) Assembler → A low-level language used for hardware and system programming, not for multimedia web development.

Thus, the correct answer is (B) Java.