Select the most appropriate option for blank no. 4
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. discovered.
Let's have a look at the meaning of the given options:-
- invented- to think of or make something for the first time.
- discovered- to find or learn something that nobody had found or knew before.
- managed- to succeed in doing or dealing with something difficult; to be able to do something.
- proposed- to formally suggest something as a possible plan or action.
we can correct something only if we discover that thing.
Here "discover" makes a suitable appearance with the blank space.
Hence, the chosen option will be correct.