Correct Answer : Option (C) - Ajay Mathur
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.