Select the most appropriate option to fill in the blank.
3D printing is an exciting new technology _______ promises to very quickly create anything people can design.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. that.
Context: The sentence requires a relative pronoun to introduce a clause describing “technology.”
Meaning of the words:
the: Definite article; does not connect clauses.
then: Refers to time; irrelevant in this context.
than: Used in comparisons; incorrect here.
that: Relative pronoun; correctly introduces the clause “that promises to very quickly create anything people can design.”
Correct word: that
Reason: Only “that” appropriately links the noun “technology” with the clause describing its function.
Final sentence: 3D printing is an exciting new technology that promises to very quickly create anything people can design.
Hence, the chosen option is correct.