Meaning: Accuracy refers to the quality of being correct or precise.

Wrong options:

• exists: The word 'exists' is a verb that does not fit grammatically in this context, as it does not describe a quality of recall.
• lingers: The word 'lingers' is a verb that implies staying in a place longer than necessary, which does not relate to the quality of memory recall.
• arrived: The word 'arrived' is a verb that indicates reaching a destination, which is irrelevant to the context of memory recall.
• passion: The word 'passion' is a noun that refers to a strong feeling or enthusiasm, which does not relate to the precision of memory recall.

Correct answer: exists

Explanation: The word 'exists' is a verb that indicates the presence or reality of something. In this context, it fits grammatically and logically as it addresses the claim about the reality of photographic memory, which is under question.

Meaning: Exists means to have actual being or reality.

Wrong options:

• accuracy: The word 'accuracy' is a noun that does not fit grammatically as it does not convey the action of being or presence.
• lingers: The word 'lingers' is a verb that implies remaining in a place longer than necessary, which does not relate to the existence of memory.
• arrived: The word 'arrived' is a verb that indicates reaching a destination, which does not apply to the context of memory's existence.
• occurred: The word 'occurred' is a verb that refers to something happening, which does not address the existence of photographic memory.
• passion: The word 'passion' is a noun that refers to a strong feeling, which does not relate to the existence of a phenomenon.

Correct answer: occurred

Explanation: The word 'occurred' is a verb that means to happen or take place. It fits grammatically and contextually as it describes the action of past events happening, which is relevant to the discussion of memory recall.

Meaning: Occurred means to happen or take place.

Wrong options:

• accuracy: The word 'accuracy' is a noun that does not fit grammatically as it does not describe an action related to events happening.
• exists: The word 'exists' is a verb that indicates presence, which does not relate to the timing of past events.
• lingers: The word 'lingers' is a verb that implies staying longer than necessary, which does not apply to the context of events happening.
• arrived: The word 'arrived' is a verb that indicates reaching a destination, which does not relate to the occurrence of past events.
• passion: The word 'passion' is a noun that refers to a strong feeling, which does not relate to the timing of events.