Subcoating is given to the tablets:

The correct answer is:

4) To avoid stickiness

Subcoating is a crucial step in the tablet coating process, primarily aimed at rounding the edges of the tablet and building up its size. This process involves applying a binder solution followed by dusting with subcoating powders, then drying until the desired thickness is achieved. The main objectives of subcoating include:

• Rounding the edges: This enhances the tablet's appearance and makes it easier to swallow.
• Building up tablet size: This ensures the tablet meets the required dimensions and weight specifications.
• Preventing stickiness: By creating a smooth surface, subcoating helps prevent tablets from sticking together during subsequent coating steps.

While subcoating can also help mask the taste of the tablet, its primary purpose is to prepare the tablet's surface for further coating processes.