Not entirely sure what you want to achieve, but consider this program:
var a = 'foo';
var b = 'bar';
var c = { first : a, second : b };
console.log(JSON.stringify(c, null, 4));
A json object c is constructed using the values from variables a and b. Is this what you mean?
Answer:
is there multiple choice or do i have to answer from my own words??
Answer:
The first one is Mobile Marketing Second Box is social media and the last is Search engine
Explanation: