Fill in the blanks with the options provided :
"After detailed discussions we came _____ to the conclusion that there was no necessity _____ fencing the garden."

Question

Accepted Answer

Here's the explanation:

Option 2 is correct because:

*   **"came to the conclusion"** is a standard and idiomatic phrase in English. It means to arrive at a decision or judgment after considering the facts. The preposition "to" is the correct preposition to use with "conclusion" in this context.

*   **"necessity of fencing"** is also the correct prepositional usage. The phrase "necessity of" indicates what the necessity *pertains to* or *consists of*. It correctly expresses that the fencing is what is being deemed unnecessary.

Now, let's examine why the other options are incorrect:

*   **Option 1: to, to** - While "came to the conclusion" is correct, "necessity to fencing" is grammatically incorrect and doesn't make logical sense. We don't say "necessity *to* doing something" in this context.

*   **Option 3: at, to** - "Came at the conclusion" is not a standard or idiomatic phrase. While "at" can be used with locations or points in time, it's not the correct preposition to use with "conclusion" when referring to arriving at a decision. Also, as mentioned before, "necessity to fencing" is incorrect.

*   **Option 4: on, for** - "Came on the conclusion" is not a standard or idiomatic phrase. "Necessity for fencing" is *grammatically* acceptable, but "necessity *of* fencing" is more common and idiomatic when discussing the need for a specific action. More importantly, the question asks for the *best* fit, and "necessity of" is a stronger and more natural fit in this context. Therefore, while not strictly *wrong*, it's not as correct as Option 2.

Therefore, only Option 2, "to, of," provides the correct and most idiomatic prepositions to complete the sentence, making it the correct answer.