In clock, at 4 : 10 o’clock, when time will 5 : 20 in this clock. How…

5 : 20 – 4 : 10  =  60 + 10  =  70^o minute 

By hand hour traced in between time  =  70 × \(\frac{1}{2}\)  =  35^o

So, correct answer is option (C)