Answer
$B \cap A = \left\{1, 3, 5\right\}$
Work Step by Step
Recall:
The intersection of sets $A$ and $B$, denoted by $A \cap B$, contains all the elements that are common to both sets.
Note that the elements that are common to the sets $A$ and $B$ are $1, 3, \text{ and } 5$.
Thus,
$$B \cap A = \left\{1, 3, 5\right\}$$