Step 1: About Kalidasa.
Kalidasa is regarded as one of the greatest Sanskrit poets and dramatists. His works are highly esteemed in classical Indian literature.
Step 2: Ritusamharah.
This is a descriptive poem attributed to Kalidasa, describing the six Indian seasons. Hence, A is correct.
Step 3: Abhijnanashakuntalam.
This is Kalidasa’s famous play based on the story of Shakuntala and King Dushyanta. It is widely acclaimed even outside India. Hence, D is correct.
Step 4: Exclusion of other works.
- Bhattikavyam was written by Bhatti, not Kalidasa.
- Naishadheeyacharitam was written by Sriharsha, not Kalidasa.
Step 5: Conclusion.
Therefore, the two works of Kalidasa in the given options are Ritusamharah and Abhijnanashakuntalam.