Meaning: 'Using' refers to the act of employing or utilizing something, in this case, a laser-based communication system.

Wrong options:

• as using: The phrase 'as using' is grammatically incorrect because 'as' does not appropriately connect the action to the method in this context.
• to use: 'To use' suggests an infinitive form that does not fit the sentence structure, which requires a gerund to indicate the ongoing action.
• use: 'Use' is a base form of the verb and does not fit grammatically in this context where a gerund is needed.

Correct answer: launched

Explanation: The word 'launched' is the correct past participle that indicates the action completed in October, fitting the context of the sentence which describes the initiation of the Psyche probe's mission.

Meaning: 'Launched' means to send a spacecraft into motion or into space, marking the start of its mission.

Wrong options:

• initiated: 'Initiated' implies starting something but does not specifically convey the action of sending a spacecraft into space, making it less precise in this context.
• established: 'Established' suggests setting up or founding something, which does not accurately describe the action of sending the probe into space.
• proved: 'Proved' indicates demonstrating the truth of something, which is unrelated to the action of sending the probe.

Correct answer: potential

Explanation: The word 'potential' accurately describes the capability or possibility of laser technology in transmitting data, fitting well within the context of the sentence that discusses advancements in communication technology.

Meaning: 'Potential' refers to the inherent ability or capacity for something to develop or happen, in this case, the effectiveness of laser technology.

Wrong options:

• range: 'Range' refers to the extent of something but does not convey the idea of capability or possibility as effectively as 'potential.'
• probability: 'Probability' indicates likelihood, which does not fit the context of discussing the capabilities of technology.
• extent: 'Extent' refers to the degree or scope of something, but it lacks the connotation of capability that 'potential' provides.

Correct answer: ambitious

Explanation: The word 'ambitious' fits contextually as it describes missions that are bold and require significant effort, aligning with the tone of the sentence that discusses future space exploration.

Meaning: 'Ambitious' means having a strong desire for success or achievement, particularly in challenging endeavors.

Wrong options:

• rudimentary: 'Rudimentary' implies something basic or simple, which contradicts the context of advanced space missions being discussed.
• maximum: 'Maximum' suggests the greatest possible amount but does not convey the idea of boldness or aspiration inherent in 'ambitious.'
• overall: 'Overall' refers to something in general but does not capture the specific quality of being bold or challenging that 'ambitious' does.