Answer:
In the given figure, A function is defined from left to right, that is :
f : {A, B, C, D, E} { \rightarrow}→ {1, 2, 3, 4, 5}
So, it's domain is :
\qquad \sf \dashrightarrow \: \{ A,B,C,D,E\} ⇢{A,B,C,D,E}
And it's range is :
\qquad \sf \dashrightarrow \: \{1,2,3,4,5 \} ⇢{1,2,3,4,5}