Answer:
Option (D)
Step-by-step explanation:
Domain of a function is defined by the x-values (input values) of the graph.
Similarly, Range is defined by the set of y-values (output values) of the graph of the function.
From the graph attached,
Domain of function 'f' : {x | x ∈ R}
Domain of function 'g' : {x | x ∈ R}
Domain of function 'h' : {x | x ∈ R}
Therefore, all the function graphed have domain of all real numbers.
Option (D) will be the answer.
