To prevent Cross Site Scripting (XSS), it is important to validate all the user-supplied input for type, length, format, and range before processing or inserting those values into the database.
Option A) Type and format - This option is incorrect because it only considers the type and format of the input, but does not address the length and range.
Option B) Type, length, format, and range - This option is correct because it includes all the necessary validations to ensure the input is safe. Validating the type ensures that the input matches the expected data type. Validating the length ensures that the input does not exceed the allowed length. Validating the format ensures that the input follows the expected pattern or structure. Validating the range ensures that the input falls within the acceptable range of values.
Option C) Type, length, and range - This option is incorrect because it does not consider the format validation, which is important to prevent certain types of XSS attacks.
Option D) Length and range - This option is incorrect because it only considers the length and range of the input, but does not address the type and format validations.
The correct answer is B) Type, length, format, and range. This option is correct because it includes all the necessary validations to prevent Cross Site Scripting (XSS) attacks.