Since BaF2 dissociates in water as follows :
BaF2(s) ==== Ba+2 (aq.) + 2F-1 (aq.)
s 2s
Where s is the molar solubility of BaF2 In water
So, as Ksp ( BaF2 ) = [ Ba+2] [ F-1]2
Ksp = s x (2s)^2 = 4s^3
So, s^3 = 2.45 x 10^-5 / 4 = 6.125 x 10^-6
So, s = ( 6.125 )1/3 x 10^-2
s = 1.83 x 10^-2 M
so. , Correct Option is
A) 1.83 x 10^-2 M
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