Question

One of the most useful materials in the world is glass. It is made chiefly from sand, soda and lime. We can combine those two sentences into .....
A. One of the most useful materials in the world is glass, which is made chiefly from sand, soda and lime.

B. One of most useful materials in the world is glass which is made chiefly from sand, soda and lime.

C. One of most useful materials in the world is glass who is made chiefly from sand, soda and lime.

D. One of most useful materials in the world is glass is made chiefly from sand, soda and lime.

E. One of most useful materials in the world is glass to which made chiefly from sand, soda and lime.​

Answer 1

Jawaban:

The correct answer is A. One of the most useful materials in the world is glass, which is made chiefly from sand, soda and lime.

The reason is that we use which to introduce an adjective clause that modifies a noun that is not a person, such as glass. We also need to put a comma before which to indicate that the adjective clause is non-restrictive, meaning that it provides extra information that is not essential to identify the noun.

Penjelasan:

The other options are incorrect because:

• B. There is no comma before which, which makes the adjective clause restrictive and changes the meaning of the sentence.
• C. We use who to introduce an adjective clause that modifies a noun that is a person, not a thing like glass.
• D. There is no relative pronoun to introduce the adjective clause, which makes the sentence incomplete and ungrammatical.
• E. We use to which to introduce an adjective clause that modifies a noun that indicates direction or destination, not a material like glass.