How many types of agents are there in artificial intelligence? A. 1 B. 2 C. 3 D. 4

There are typically three main types of agents in artificial intelligence:

1. Simple Reflex Agents: These agents respond to the current situation based on a set of conditions. They do not have memory of past actions.

2. Model-Based Reflex Agents: These agents have a certain level of memory and can consider the state of the world, allowing them to make decisions based on both current and past situations.

3. Goal-Based Agents: These agents can take actions based on achieving specific goals. They can anticipate future states and evaluate which actions will help them reach their objectives.

4. Utility-Based Agents: These agents go a step further by not only striving for goals but also evaluating the best action based on a utility function, which ensures the most favorable outcomes are chosen based on preferences.

Therefore, the answer to the question is C. 3 if considering only the three primary types (Simple Reflex, Model-Based Reflex, Goal-Based) commonly discussed in foundational AI literature. However, if you include Utility-Based Agents, you might consider 4 types. The common academic classification tends to highlight three main types.