Digital PSAT Reading and Writing Practice Question 91: Answer and Explanation
Question: 91
Today we can produce even very large sheets of glass of nearly uniform thickness using the float glass process invented by Sir Alastair Pilkington in the mid-1950s. As the name implies, this technique ________________
Which choice completes the text so that it conforms to the conventions of Standard English?
- A. involve floated molten glass on a bath of molten tin.
- B. involve floating molted glass with a bath of molted tin.
- C. involves floated molted glass on a bath of molted tin.
- D. involves floating molten glass on a bath of molten tin.
Correct Answer: D
Explanation:
(D) Technique is the singular subject, so the verb should be involves. (D) also uses the correct forms of floating and molten to describe the class-molted does not work as a word in this context-molted means for an animal to have shed its exterior coat. Molten means "liquified," which would be appropriate to describe hot glass. Choices (A) and (B) have plural verbs, and choice (C) uses molted instead of molten.
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