<i>In question below fill the gap with the appropriate option</i>:I have stopped writing letters application because i .... that all the vacancies are filled

In question below fill the gap with the appropriate option: I have stopped writing letters application because i .... that all the vacancies are filled

In question below fill the gap with the appropriate option:

I have stopped writing letters application because i .... that all the vacancies are filled

The correct answer is C. heard

No explanation given