The correct option is A 0.7
We multiply both the numerator and denominator of 3550 with 2 to get a fraction that has a denominator in the form of power of 10.
3550=35×250×2=70100
∵ Denominator of fraction 70100 is 100, a power of 10 having two zeroes after 1, the decimal point of numerator would be shifted by two units to the left.
70100=0.70=0.7