Step 1: Real-world AI systems rarely have complete or certain information. Probabilistic reasoning uses probability theory to work with this incomplete knowledge.
Step 2: It assigns probabilities to outcomes and updates them with evidence, for example using Bayes' rule \( P(H \mid E) = \dfrac{P(E \mid H)\,P(H)}{P(E)} \).
Step 3: This lets an agent reason and decide even when facts are unsure. Option (C) is the opposite of probabilistic thinking. Bias handling (B) and removing ambiguity (D) are not its main purpose.
Step 4: The core aim is to manage uncertainty while making decisions.
Correct option: (A).