A.I. Explanation:

Correct answer: than

Explanation: The word 'than' is used for making comparisons, which is essential in this context as it compares the performance of two groups: those who went with their initial response and those who took more time. This fits grammatically and contextually, as it establishes a comparative relationship between the two subjects.

Meaning: 'Than' is a conjunction used to compare two different things, indicating that one is superior or inferior to the other in some way.

Wrong options:

• wrong_option_1: 'With' suggests accompaniment or association, which does not fit the comparative structure needed here.
• wrong_option_2: 'In' indicates a location or condition, which is not appropriate for making a comparison between performances.
• wrong_option_3: 'By' implies a method or means, which does not align with the comparative context required in this sentence.

Correct answer: same

Explanation: The word 'same' indicates that the symbol being referred to is identical to another, which aligns with the context of the sentence discussing perception. This fits grammatically as it describes the relationship between the rotated symbol and the original symbol.

Meaning: 'Same' means identical or unchanged, indicating that the rotated version of the symbol is still recognized as the same symbol despite its orientation.

Wrong options:

• wrong_option_1: 'Different' contradicts the context, as the sentence discusses the recognition of the symbol as unchanged, not altered.
• wrong_option_2: 'New' implies something that has not existed before, which does not fit the context of recognizing a rotated version of an existing symbol.
• wrong_option_3: 'Barred' refers to something that is prohibited or blocked, which is irrelevant to the discussion of visual perception.

Correct answer: concluded

Explanation: The word 'concluded' indicates that the researchers reached a decision or judgment based on their findings, which is appropriate in this context. It fits grammatically as it follows the subject 'the researchers' and aligns with the logical flow of the sentence.

Meaning: 'Concluded' means to arrive at a decision or opinion after consideration, indicating that the researchers made a determination based on their observations.

Wrong options:

• wrong_option_1: 'Notified' means to inform someone, which does not fit the context of drawing a conclusion from research findings.
• wrong_option_2: 'Exacerbated' means to make a problem worse, which is not relevant to the context of the researchers' findings.
• wrong_option_3: 'Perpetuated' means to cause something to continue indefinitely, which does not align with the idea of reaching a conclusion.

Correct answer: on

Explanation: The word 'on' indicates reliance or dependence, which is appropriate in this context as it describes how subjects depended on their intuitive responses. This fits grammatically and contextually, as it shows the relationship between the subjects and their responses.

Meaning: 'On' in this context means to depend or rely upon something, indicating that the subjects were using their intuitive responses as a basis for their decisions.

Wrong options:

• wrong_option_1: 'To' suggests direction or purpose, which does not convey the idea of reliance needed in this context.
• wrong_option_2: 'With' implies accompaniment, which does not accurately reflect the relationship of dependence described here.
• wrong_option_3: 'By' indicates a method or means, which does not fit the context of relying on intuitive responses.