Consider the Boolean function $z(a, b, c)$. Which one of the following minterm lists represents the circuit given above?

From the given logic circuit diagram:

1. The NOT gate inverts input $b$ to $\overline{b}$.

2. The AND gate takes $\overline{b}$ and $c$ as inputs, producing the term $\overline{b}c$.

3. The OR gate takes input $a$ and the output of the AND gate $\overline{b}c$, producing:

   $$z(a, b, c) = a + \overline{b}c$$

Now find the minterms corresponding to $z(a, b, c) = 1$:

• For the term $a$ ($a=1$, with $b, c \in \{0, 1\}$): minterms are $m_4 (100), m_5 (101), m_6 (110), m_7 (111)$.

• For the term $\overline{b}c$ ($b=0, c=1$, with $a \in \{0, 1\}$): minterms are $m_1 (001), m_5 (101)$.

Taking the union of all minterms:

Hence, option B is the correct answer.