Match Column-$I$ with Column-$II$.

Column-$I$	Column-$II$
$(1)$ Angle of projection for a projectile launched horizontally with constant speed	$(a)$ $0$
$(2)$ Horizontal component of acceleration for a projectile launched horizontally with constant speed	$(b)$ $0^o$

(A) For a projectile launched horizontally,the initial velocity vector is parallel to the ground,so the angle of projection $\theta = 0^o$. Thus,$(1)$ matches with $(b)$.
In projectile motion,the only acceleration acting on the object is the acceleration due to gravity $(g)$,which acts vertically downwards. Therefore,the horizontal component of acceleration is $0$. Thus,$(2)$ matches with $(a)$.
The correct matching is $(1-b, 2-a)$.