Mary Jackson prepared an assignment but John Becker was not ready to approve the result of the assignment which led to the disagreement between them.
It became evident later that John Becker had the wrong input data which made him the wrong party in the disagreement.
Answer:
Traffic chaos and fatalities resulting from it are the daily items for media news.
He - gives us - all - the - confidence - and - makes us - happy - in life.
THE ANSWER IS A BECAUSE ITS THE MOST LOGICAL ANSWER OUT OF ALL THE CHOICES