To preserve the contents of an array from being cleared when the array is redimensioned, you can use the Preserve keyword.
Option A) Using Redim Keyword - This option is incorrect. The Redim keyword is used to resize an array, but it does not preserve the existing contents of the array. It will clear the array and allocate new memory for the resized array.
Option B) Using Preserve Keyword - This option is correct. The Preserve keyword is used along with the Redim keyword to resize an array while preserving the existing contents. When you use the Preserve keyword, the current values in the array are retained, and the array is resized accordingly.
Option C) Using Reserve Keyword - This option is incorrect. The Reserve keyword is not a valid keyword in most programming languages. It is not used for preserving the contents of an array.
Option D) None of the above - This option is incorrect. The correct answer is option B, Using the Preserve keyword.
Therefore, the correct answer is B) Using Preserve Keyword. This option is correct because it allows you to resize an array while preserving its existing contents.