Question

Fill in the blanks with the most appropriate words.
He became interested _____ physics _______ the age ______ 14.
a) In/ in/ of
b) In/ at/ of
c) In/ for/ in
d) At/ at/ of
e) Of/ in/ of

Answer 1

Hint: We need to use the preposition that indicates interest in something, the age at which the person was interested, and then express the number of ages (of which the person is).

Complete answer:
 A preposition is a word that links nouns, pronouns, or phrases to other words within a sentence. In the above option, there are four prepositions – in, of, at, and for. And we need to find the best suited for each blank. the options given to us are used as -
a) in - is used to show that something is inside or into something.
b) of - is used to show a part of a whole
c) at - is used for the most specific times, and for holidays without the word day or to show age.
d) for - is used when we talk about a vague time period or give a reason why something is done.
Now, let us see what can be filled in the blanks in the sentence -
In the first blank we need the preposition which will indicate interest, here in the sentence the interest is physic. The preposition that will express the interest is ‘in’.
Now, in the second blank, we need the preposition which will be used when the speaker is referring to someone’s age. So the preposition that will express the age is ‘at’
Now, in the third blank, we need a preposition that expresses the number of age, for instance in the above sentence the age is 14. So, the preposition that is correct or would be the most suited is ‘of’.
So, the chronology of prepositions is – in/ at/ of.
By this explanation the correct solution is option (b), i.e. in/ at/ of.

Note:
 Be careful while using the prepositions. The preposition ‘for’ is used to indicate some reason because of which something is done. ‘In’ is used to show interest, ‘at’ to indicate a time period or age, and to show belonging or part of the whole.