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.