Meaning: 'Outside' refers to the external area or environment, indicating that astronauts can perform work beyond the confines of their spacecraft.

Wrong options:

• anywhere: While 'anywhere' suggests a broad location, it lacks the specific contrast needed with 'inside' and does not fit the grammatical structure of the sentence.
• wherever: 'Wherever' implies any place but does not provide the specific contrast to 'inside' that 'outside' does, making it less suitable in this context.
• slided: 'Slided' is a past tense verb that does not fit grammatically or contextually, as it does not indicate a location.

Correct answer: carried

Explanation: The word 'carried' is the correct past participle form that fits the context of work being performed. It indicates that the work is conducted or executed alongside the craft, maintaining grammatical consistency with the sentence structure.

Meaning: 'Carried' means to perform or execute tasks, suggesting that the astronauts are actively involved in their work alongside the spacecraft.

Wrong options:

• forwarded: 'Forwarded' implies sending something ahead, which does not fit the context of performing work alongside the craft.
• longed: 'Longed' refers to a desire for something, which is unrelated to the context of executing work.
• stared: 'Stared' indicates looking intently at something, which does not relate to the action of performing work.

Correct answer: travel

Explanation: The word 'travel' fits grammatically as a noun that refers to the journey or mission in space. It aligns contextually with the need for supplies necessary for the astronauts' activities in space.

Meaning: 'Travel' refers to the act of moving from one place to another, particularly in the context of space missions.

Wrong options:

• tour: 'Tour' implies a guided visit, which does not accurately describe the nature of space missions or the need for supplies.
• ramp: 'Ramp' is a noun that refers to a sloped surface, which does not fit the context of space activities or supplies.
• power: 'Power' refers to energy or strength, which does not relate to the context of needing supplies for space missions.

Correct answer: Outside

Explanation: The word 'Outside' is correctly capitalized as it begins a new sentence and fits contextually to indicate the location where astronauts can observe the seeds' reactions in space.

Meaning: 'Outside' refers to the external area beyond the spacecraft, where observations can be made.

Wrong options:

• Inside: 'Inside' contradicts the context of the sentence, as it suggests being within the spacecraft rather than observing from outside.
• Infact: 'Infact' is a misspelling of 'in fact,' which does not fit grammatically or contextually as it does not indicate a location.
• Outraged: 'Outraged' is an adjective expressing anger, which is irrelevant to the context of the sentence.

Correct answer: investigate

Explanation: The word 'investigate' is a verb that fits grammatically and contextually, indicating the action of examining or studying the seeds to understand their biological changes.

Meaning: 'Investigate' means to examine or inquire into something systematically, which is relevant to the astronauts' work with seeds.

Wrong options:

• shuttled: 'Shuttled' refers to moving something back and forth, which does not fit the context of examining seeds.
• shifted: 'Shifted' implies moving something from one place to another, which does not convey the idea of studying or examining.
• removed: 'Removed' suggests taking something away, which does not align with the context of investigating or studying seeds.

Correct answer: set up

Explanation: The phrase 'set up' is a phrasal verb that fits grammatically and contextually, indicating the action of preparing or arranging experiments outside the craft.

Meaning: 'Set up' means to arrange or establish something, particularly in the context of conducting experiments.

Wrong options:

• set along: 'Set along' is not a standard phrase and does not convey a clear meaning in this context, making it grammatically incorrect.
• set aside: 'Set aside' implies putting something to one side, which does not fit the context of preparing experiments.
• set as: 'Set as' is not a commonly used phrase and does not convey the intended meaning of preparing or arranging.