The Major Dhyan Chand Khel Ratna Award is indeed given for the most spectacular and outstanding performance by a sportsperson over a period of four years. Therefore, pair 1 is correctly matched.
The Arjuna Award, however, is not for lifetime achievement but for consistent outstanding performance for four years. Therefore, pair 2 is incorrectly matched.
The Dronacharya Award is to honor eminent coaches who have successfully trained sportspersons or teams. This makes pair 3 correctly matched.
The Rashtriya Khel Protsahan Puraskar is given to corporate bodies or individuals to encourage sports, not specifically for the contribution of retired sportspersons. Hence, pair 4 is incorrectly matched.
Therefore, only pairs 1 and 3 are correctly matched, and the correct answer is that only two of the pairs are rightly matched.