Final answer:
Neither Text Box, Combo Box, Check Box, nor Option Button controls are designed to add sounds to a form. To include sounds, Prishna would need a specialized control or script that supports audio playback, which involves custom development or plug-ins.
Step-by-step explanation:
The control that would allow Prishna to add sounds to her form during the data entry process is none of the options provided in the question. Text Box, Combo Box, Check Box, and Option Button are typical controls used in forms for text entry, selection from a list, and choosing various options, but they do not inherently provide functionality for playing sounds.
To incorporate sounds into a form, you would typically need to use a more specialized control or script that can play audio files. In database form design, this might involve scripting language or multimedia object embedding that is capable of triggering and controlling sound playback. This is usually not a standard control like the ones listed but would require custom development or the use of a plug-in that offers multimedia capabilities.