Write the inclination of a line which is parallel to x-axis.
Correct option is A. 0
Inclination of $$x-$$ axis is $${ 0 }^{ 0 }$$.
The slope of two or more parallel lines is the same or equal to each other.
Hence, inclination of a line which is parallel to x-axis $$ = { 0 }^{ 0 }$$