Correct Answer: Oblivion

Solution : The correct choice is the second option.

Explanation:

• Suppress means to forcibly put an end to something; to prevent the expression or development of something.
• Oblivion is the state of being completely forgotten or unknown; it is the condition of being unaware or unconscious.
• Retrospection is the act or process of looking back on or reviewing past events, situations, or experiences.
• Impart means to communicate or convey information, knowledge, or a skill to someone; to share or bestow.
• Memory refers to the mental capacity or faculty of retaining and recalling past experiences, information, or impressions, which is the opposite of the word oblivion.

Thus, oblivion is the correct answer.