Statement - I :Y.D.S.E, as the source slit width increases, fringe pattern gets less and less sharp.
Statement - II :When the source slit is so wide that the condition $\frac{s}{S}<\frac{\lambda }{d}$is not satisfied, the interference pattern is appears.

If s is size of the source and S is distant of source from the plane of the two slits, then for interference fringes to seen, the condition is $\frac{\mathrm{s}}{\mathrm{S}}<\frac{\mathrm{\lambda }}{\mathrm{d}}$
As source slit is brought closer to double slit plane, S decreases, then interference pattern gets less and less sharp. When the source is too close, the fringe separation remains fixed.
Similarly As width of source slit is increased, the interference pattern gets less and less sharp. When the source slit is so wide that condition $\frac{\mathrm{s}}{\mathrm{S}}<\frac{\mathrm{\lambda }}{\mathrm{d}}$
is violated, the interference pattern disappears.