Select the most appropriate option to fill in blank no. 3.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. process.
- In the context of the sentence, astronomers are engaged in a process of matching objects detected on different nights over the course of 24 months to confirm them as moons.
- The other options, such as "progress," "practice," and "product," do not accurately describe the astronomers' activity in this context.