The correct answer is: From April to September end.
The Administrative Wing of the High Court and its Chief Justice shift to Srinagar from April to September end every year. This is because the weather in Srinagar is pleasant during this time of the year, and it is also the tourist season. The shift to Srinagar allows the judges and staff of the High Court to enjoy the pleasant weather and to also take advantage of the tourist attractions in the city.
The other options are incorrect because they do not correspond to the actual period of the year when the Administrative Wing of the High Court and its Chief Justice shift to Srinagar.