Here is the visual diagram for the simplified Boolean logic expression $z=B(\frac{?}{\text{b}\text{a}\text{r}}(A)\frac{+}{b}ar(C)\frac{+}{b}ar(D)).$ It

includes the NOT gates for inputs $A,C,$ and $D,$ an OR gate combining their outputs, and an AND

gate that takes input $B$ and the output of the OR gate to produce the final output $z.$