Explanation

Generally prefer is followed by To.

To is a preposition here.

Prefer means ترجیع دینا

I prefer tea to coffee. 

Explanation

Both Laugh and Sneer are followed by preposition at. 

Sneer at means مزاق اڑانا یا طنز کرنا

You should not sneer at the boy.

We must not sneer at elders. 

He was laughing at the poor.

Explanation

Honesty never goes to waste.

The subject "Honesty" is singular and uncountable,

And the sentence is in the present simple tense, expressing a universal truth or general fact.

In present simple tense: Singular subject → verb + s/es

Explanation

Explanation

 The meeting was held in the conference room.

یہ ملاقات کانفرنس روم میں ہوئی۔

Use “in” when something happens inside an enclosed space, like a room, hall, or building.