Question

Choose the correct word or phrase that completes the sentence correctly.
These animals feed ______ grass.
A) with
B) on
C) in
D) for

Answer 1

Hint: Read the sentence carefully. The preposition when filled in the blank should give the correct meaning and should also be grammatically correct. Analyze and eliminate the wrong options one by one to obtain the right answer.

Complete answer:
Preposition is a word or group of words used to show position, time, direction or to show a logical relationship between two or more people, places or things.
Phrasal verbs are a combination of two or three words from different grammatical categories. It can be of verb+adverb (or) verb+preposition (or) verb+adverb+preposition.
In the above given sentence, it is evident that some animals eat grass. We have to find out which preposition when added to the given verb is a synonym or is a matching word for eat.

Option A) with - ‘These animals feed with grass’ is an incorrect answer because it is used to indicate being together or being involved in something or when using or having something. ‘Feed with’ can be used if someone else is feeding those animals with grass. Since it is mentioned the animals feed themselves, this is an incorrect option.

Option B) on - ‘These animals feed on grass’ is the right answer because ‘on’ is used to express something which is done by themselves. Since the grass is fed by the animals themselves, this is the right option.

Option C) in - ‘These animals feed in grass’ is an incorrect answer because ‘in’ is used to express unspecific days or months or years or is used to indicate a location, shape or colour.

Option D) for - ‘These animals feed for grass’ is an incorrect answer because ‘for’ is used to mention time or duration or to indicate the use of something or to mean ‘because of’.

Hence the correct answer is option ‘B’.

Note: ‘On’ can also be used to indicate location, time, surface on something or to mention the state of something. Some examples for the given preposition are:
-They feed the animals with grass.
-The book was on the table.
-He was on time for the function.
-They used to have icecream in the winter also.
-They had to stay back for another hour.