Step 1: Understanding the Concept:
The Tilakkhana are the three characteristics that describe the nature of all conditioned reality. Realizing these three marks is considered essential for liberation.
Step 2: Detailed Explanation:
The three marks are:
1. Anicca (Impermanence): Everything is in a state of flux; nothing lasts forever.
2. Dukkha (Suffering): Because things are impermanent, clinging to them results in unsatisfactoriness.
3. Anatta (Non-self): There is no permanent, unchanging soul or "I" in any phenomenon.
Option A refers to the Three Jewels; Option B refers to elements of the Four Noble Truths.
Step 3: Final Answer:
The Three Marks are Impermanence, Suffering, and Non-self.