Why do the evaluators ask you this question? This question is in two parts. First, the evaluators would like to know - why you want to pursue management? Secondly, the evaluators would like to know how much do you know about the Institute you have applied to.
Talk about your career objectives and strike relevance between the MBA program and your career objectives
Highlight the nature of the program and the value it will create in terms of industry readiness
Mention the salient strengths of the Institute, its pedagogy and how it fits with your career goals
Give examples of some well-known college alumni, their career progression and how the institute helped them (if you know)
Give examples of people from the Institute you have met (this shows that you did your homework)