The Following Economic Model Predicts Whether a Voter Will Vote $\beta$

The following economic model predicts whether a voter will vote for an incumbent school board member INCUMBENT = $\beta$ ₁ + $\beta$ ₂ MALE + $\beta$ ₃ PARTY + $\beta$ ₄ MARRIED + $\beta$ ₅ KIDS
Where
INCUMBENT = 1 if the voter votes for them,0 otherwise,
MALE = 1 if the voter is a male,
PARTY indicates the voter is registered with the same political party as the incumbent,
MARRIED = 1 for married voters,0 otherwise,and
KIDS is the number of school age kids living with the voter.
What is the probability that a married female without kids who is not registered with a political party will vote for the incumbent?

A) $\beta$ ₁ + $\beta$ ₄
B) $\beta$ ₁
C) $\beta$ ₁ + $\beta$ ₂ + $\beta$ ₃ + $\beta$ ₅
D) $\beta$ ₂ + $\beta$ ₃ + $\beta$ ₅