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.

Correct option is B

✔️ Correct option: (b) that
Explanation:
The word “that” is a relative pronoun used to introduce a defining relative clause, giving essential information about “technology.” It connects the noun “technology” with the verb “promises.”
Correct sentence: “3D printing is an exciting new technology that promises to very quickly create anything people can design.”
Grammatical rule used:
· Use relative pronouns (like “that”, “which”, “who”) to connect a noun with a clause that gives more information about it.
· "That" is used in essential clauses—where the additional information is necessary to the meaning of the sentence.
Explanation of rule in Hindi:
“Technology” एक noun है और इसके बारे में जानकारी जोड़ने के लिए हम “that” जैसे relative pronoun का प्रयोग करते हैं। यह जरूरी जानकारी देता है।
Meanings of other options:
· (a) the –
English: A definite article used before nouns.
Hindi: निश्चित आर्टिकल – “the book”, “the car” – यहाँ अनुपयुक्त ❌
· (c) than –
English: Used in comparisons (e.g., taller than).
Hindi: तुलना के लिए प्रयोग होता है – “उससे अधिक लंबा” ❌
· (d) then –
English: Refers to time or consequence – “and then he left.”
Hindi: तब, उसके बाद ❌