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

Solution

✅ Correct Option: 4

It’s important to understand what each blank needs:

Astronauts who stayed for an ______ period of time

→ An adjective meaning a long duration.

displayed a remarkable level of ______ endurance

→ A word that naturally modifies endurance.

and mental ______.

→ A noun meaning psychological strength under stress.


Eliminate incorrect options with the word fill-up that makes the whole option incorrect:

OptionReason
1. extensive; dysfunctional; agilityDysfunctional endurance is contradictory, and mental agility refers to quick thinking, not sustained psychological strength.
2. explicit; stoic; integrityExplicit period of time is incorrect usage, and mental integrity does not convey endurance or coping ability.
3. expanded; stern; acuityExpanded period of time is unnatural, and mental acuity refers to sharpness, not resilience.

Option 4 is correct as:

extended → Correctly describes a long-duration stay.

physical → Forms the natural collocation physical endurance.

resilience → Accurately conveys psychological strength and the ability to cope under stress.


Final Answer:

extended; physical; resilience

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