Particle physicists like Ayana Holloway Arce and Aida El-Khadra spend much of their time what is invisible to the naked eye: using sophisticated technology, they closely examine the behavior of subatomic particles, the smallest detectable parts of matter.<br/><br/>Which choice completes the text with the most logical and precise word or phrase?
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Mashaal Masha
Jan 12, 2024
Particle physicists like Ayana Holloway Arce and Aida El-Khadra spend much of their time ________ what is invisible to the naked eye: using sophisticated technology, they closely examine the behavior of subatomic particles, the smallest detectable parts of matter.
Which choice completes the text with the most logical and precise word or phrase?