The correct answer is: A few.
A few means “a small number of people or things”. In this case, the question is asking how many people know computer operating among us. The answer “A few” is the most likely because it is the most general and inclusive option. It does not specify any particular person or group of people, and it does not exclude anyone.
The other options are less likely because they are more specific or exclusive. Option B, “One of”, could refer to any one person among us. Option C, “Jayesh”, could refer to a specific person named Jayesh. Option D, “A little”, could refer to a small amount of knowledge about computer operating.
Therefore, the correct answer is “A few”.