Select the most appropriate option to fill in blank number 1.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. that.
Context: The sentence introduces the role of forests and requires a relative pronoun to connect the clause describing how these services benefit the environment and human society.
Meaning of the words:
that: used to introduce a defining or restrictive clause (relative pronoun).
this: refers to a specific thing nearby or just mentioned (demonstrative pronoun).
than: used in comparisons.
then: refers to time or sequence.
Correct word: that
Reason: “That” appropriately introduces the relative clause “that benefit both the environment and human society,” making the sentence grammatically correct and clear.
Final Sentence: Forests provide essential ecosystem services that benefit both the environment and human society.
Hence, the chosen option will be correct.