To answer this question, we need to understand the typical naming convention for a RadioButton in programming.
Option A) rad - This option is correct. "rad" is the standard prefix used for the name of a RadioButton. This convention is commonly followed to ensure consistency and clarity in code.
Option B) rab - This option is incorrect. "rab" is not the standard prefix for a RadioButton.
Option C) rdo - This option is incorrect. "rdo" is not the standard prefix for a RadioButton.
Option D) rdb - This option is incorrect. "rdb" is not the standard prefix for a RadioButton.
Option E) rbt - This option is incorrect. "rbt" is not the standard prefix for a RadioButton.
The correct answer is A) rad. This option is correct because "rad" is the standard prefix used for the name of a RadioButton.