Why did you choose to apply this company?

Curiously, you seem to be asking us to tell you what your motives are. Possible reasons to apply to a given company would include, you need the work, you think that this is the kind of job you are capable of doing, you find the job stimulating and exciting and creative, you have always admired the company in question and have dreamed of working there ever since you were a tadpole. One or more of these may apply to you.