To answer this question, we need to understand the ThreadPriority enumeration in programming.
The ThreadPriority enumeration represents the priority levels that can be assigned to a thread in a multi-threaded application.
Let's go through each option to understand why it is correct or incorrect:
Option A) Lowest - This option is incorrect because the ThreadPriority enumeration does contain the Lowest priority level. The Lowest priority represents the lowest priority level that can be assigned to a thread.
Option B) Highest - This option is incorrect because the ThreadPriority enumeration does contain the Highest priority level. The Highest priority represents the highest priority level that can be assigned to a thread.
Option C) BelowNormal - This option is incorrect because the ThreadPriority enumeration does contain the BelowNormal priority level. The BelowNormal priority represents a priority level lower than Normal but higher than Lowest.
Option D) None of the above - This option is the correct answer because all of the options A, B, and C are incorrect. The ThreadPriority enumeration does contain the Lowest, Highest, and BelowNormal priority levels.
The correct answer is D. None of the above.