Correct Answer : Option (C) - Ajay Mathur
Note :
India nominated Ajay Mathur was elected as the next Director General of the International Solar Alliance (ISA). He succeeds Upendra Tripathy, who has serving as DG since 2017.
The Director-General has a four-year term, which can also be renewed for an additional term. Mathur is the chief of the New Delhi-based The Energy and Research Institute, at present.