Explanation:

- Option 1: 1928

- This is the year when the Indian men's hockey team won its first Olympic gold medal.

- The event took place at the Amsterdam Olympics.

- This victory marked the beginning of India's dominance in field hockey.

- Option 2: 1956

- India won the gold medal in field hockey at the Melbourne Olympics this year.

- It was not their first, but it's remembered for their continued excellence in the sport.

- Option 3: 1922

- This year is historically significant but not related to India’s Olympic hockey gold.

- The Olympics in question, the Summer Games, did not include hockey for India.

- Option 4: 1920

- Hockey was featured in the Olympics this year, but India did not compete.