Select the most appropriate option to fill in blank no. 1.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. that.
Context: The sentence is asking whether it is possible for someone to visually understand or observe that the Earth is round (a globe). It seeks an appropriate conjunction that introduces a noun clause explaining what is being seen.
Analysis of the given options:
That – used to introduce a clause expressing a fact or statement.
Clearly – an adverb meaning in a clear manner.
How – used to introduce the manner or process in which something happens.
Where – used to refer to a place or location.
Correct word: that
Reason: We need a conjunction to introduce the clause “the earth is a globe” which functions as the object of the verb “see.” The only conjunction that introduces a declarative clause appropriately here is “that”.
Hence, the chosen option is correct.