The probability of an event is given by
[tex]P(\text{event) = }\frac{Number\text{ of required outcomes}}{\text{Number of all possible outcomes}}[/tex]Since there are 5 numbered cards, the number of all possible outcomes is 5.
We are to find the probability of drawing a 5; we can calculate this by
[tex]P=\frac{1}{5}[/tex]Thus, the probability that Juanita draws a 5 is 1/5.
OPTION D is correct.