Question

Change the below-mentioned sentence from comparative to the superlative degree of comparison:
Platinum is more precious than diamond.
a) Platinum is preciouser than diamond.
b) Platinum is the preciousest amongst all metals.
c) Platinum is the most precious metal.
d) Platinum is as precious as diamond.

Answer 1

Hint: In the given sentence, a comparison is being made. In order to change it into a superlative sentence, it needs to have a comparison between a part and the whole.

Complete answer:
Degrees of comparison are used to compare and contrast multiple subjects or objects in a sentence. The three degrees of adjectives are the positive degree, comparative degree, and superlative degree.

Positive - The positive degree is the most simple degree of comparison. It has no special ending. It makes no comparison, just describes the existence of a particular quality.
Comparative - This degree compares two or more things to find which one exists in a higher or lower degree. It either has the word ‘more’ before the adjective or has the suffix ‘-er’ after the adjective.
Superlative - This degree denotes the most extreme form of the adjective. It is formed by using the article ‘the’ before the adjective and adding either ‘most’ before the adjective or the suffix ‘-est’ after the adjective.

Now, we know what we are looking for. Let us look at the given options-
a) Platinum is preciouser than diamond. - This sentence is grammatically incorrect. This is not the correct adjective to use. This is not the required answer. So, this is an incorrect option.
b) Platinum is the preciousest amongst all metals. - This sentence is grammatically incorrect. This is not the correct adjective to use. This is not the required answer. So, this is an incorrect option.
c) Platinum is the most precious metal. - This sentence is grammatically correct and it is in the superlative degree. This is the correct adjective to use. This is the required answer. So, this is the correct option.
d) Platinum is as precious as diamond. - This sentence is grammatically correct, however, it is to a positive degree. This is not the correct adjective to use. This is not the required answer. So, this is an incorrect option.

Note:
Look at the given sentence and note that there is a general comparative statement being made. We have to change the comparison entirely. Choose the correct option accordingly.