A.I. Explanation:

Option 1: "It is said that machines have artificial intelligence if they are able to adapt to their environment"

Explanation: The text states that a computational agent is recognized as acting intelligently when it is flexible and adaptable to change, which aligns with the idea that machines with AI can adapt to their environment.

Option 2: "A computational agent is considered intelligent if it can adapt its actions to a particular setting."

Explanation: This option is supported by the text, which mentions that an intelligent computational agent performs appropriate actions according to circumstances, indicating that adaptability to a specific setting is a key characteristic of intelligence.

Option 3: "Computational agents do not play a perennial role in a process; their participation is short-lived."

Explanation: The text explicitly states that an agent has limited memory and its role ends in a certain time period, confirming that their participation is indeed short-lived.

Option 4: "Computational agents are judgmental about the environment that surrounds them."

Explanation: While humans are described as judgmental about elements in their environment, the text does not attribute this judgmental quality to computational agents, making this statement incorrect.

Option 5: "Agents are always living creatures and react only after an action."

Explanation: This option is incorrect because the text discusses computational agents, which are not living creatures, and does not imply that they react only after an action, thus misrepresenting the nature of agents.