Answer:
Option (A)
Step-by-step explanation:
Domain of a function is defined by the x-values (input values) on the graph.
Range of a function is defined by the y-values (output values).
For a function having equation as,
y = x
Since, the given function is defined for all real numbers.
Domain of the function: {x | x ∈ R}
Range of the function: {y | y ∈ R}
Therefore, option (A) will be the answer.
