The Preposition "For"

The correct preposition in the given sentence is "for". Let's understand why "for" is the correct preposition in this context.

Explanation:

Identifying the Preposition
To identify the preposition in a sentence, we need to find the word that shows the relationship between the noun "present" and the noun "mother". In this sentence, the preposition is used to show who the present is intended for or who it is meant to benefit.

Understanding the Meaning
The sentence states that "I bought a present." This means that the speaker (the person saying the sentence) has purchased or acquired a gift. The word "for" is used to indicate the recipient of the present, which is the speaker's mother.

Preposition "For"
The preposition "for" is used to indicate the person or thing that something is intended for or benefiting. In this sentence, "for" shows that the present was bought with the intention of giving it to the speaker's mother. It establishes the relationship between the noun "present" and the noun "mother" by indicating that the present is meant for the mother's benefit or use.

Example:
To further understand the usage of the preposition "for," let's consider another example:

- I made a cake for my friend's birthday.

In this sentence, the preposition "for" shows that the cake was made with the intention of celebrating or benefiting the speaker's friend on their birthday. It establishes the relationship between the noun "cake" and the noun "friend" by indicating that the cake is meant for the friend's benefit or enjoyment.

Conclusion
In the sentence "I bought a present for my mother," the preposition "for" indicates that the present was bought with the intention of benefiting the speaker's mother. It establishes the relationship between the noun "present" and the noun "mother" by showing who the present is intended for or meant to benefit.