Question:

Astronauts who stayed for an _____________________ period of time at the International Space Station displayed a remarkable level of _____________________ endurance and mental _____________________.

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Consider the collocations (words that frequently appear together). "Extended period," "physical endurance," and "mental resilience" are all strong, common collocations, which is a good indicator that they form the correct answer.
Updated On: Oct 14, 2025
  • expanded; stern; acuity
  • extended; physical; resilience
  • explicit; stoic; integrity
  • extensive; dysfunctional; agility
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The Correct Option is B

Solution and Explanation

Step 1: Understanding the Concept:
This is a sentence completion question that requires choosing a set of three words that are contextually appropriate for describing a long stay in space.
Step 2: Detailed Explanation:
Let's break down the sentence:

Blank 1: Describes the period of time. "Extended" (meaning lasting longer than usual) is the most suitable word. "Expanded," "explicit," and "extensive" are less appropriate for describing a duration of time.
Blank 2: Describes a type of endurance. In the context of space travel, "physical" endurance is a key requirement. "Stern" (severe), "stoic" (enduring pain without complaint), and "dysfunctional" are not the right adjectives for "endurance" here.
Blank 3: Describes a mental quality. "Resilience" (the capacity to recover quickly from difficulties) is a crucial mental attribute for astronauts facing the challenges of long-duration space missions. "Acuity" (sharpness of thought), "integrity" (moral principle), and "agility" (ability to move or think quickly) are also positive qualities, but "resilience" best captures the idea of coping with a long, demanding period.
Let's check the options:

(1) "expanded" is awkward for time; "stern endurance" is an odd pairing.
(2) extended; physical; resilience: All three words fit perfectly. An "extended period" requires "physical endurance" and "mental resilience."
(3) "explicit period" doesn't make sense; "stoic integrity" is a possible phrase but less relevant than resilience.
(4) "dysfunctional endurance" is contradictory.
Option (2) provides the most coherent and logical set of words.
Step 3: Final Answer:
The correct words are extended; physical; resilience.
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