To determine the Man of the Match in the 1983 World Cup, we need to understand the context and performance of each player in the final match.
In the final of the 1983 World Cup, which was held at Lord's Cricket Ground in London, India played against the West Indies. India batted first and scored 183 runs. The West Indies were considered as the favorites to win the match, as they had a strong batting lineup and had won the previous two editions of the World Cup.
In the Indian innings, Mohinder Amarnath played a crucial role with both bat and ball. He top-scored for India with 26 runs and was the last wicket to fall. With the ball, he bowled an exceptional spell, taking 3 wickets for just 12 runs in his 7 overs. His wickets included the crucial dismissals of Vivian Richards and Andy Roberts. His all-round performance was instrumental in India's victory.
Considering the impact he had in the match, Mohinder Amarnath was named the Man of the Match in the 1983 World Cup final.
Therefore, the correct answer is:
C. M. Amarnath