At the narrowest section (throat) of a horizontal Venturi-meter, an...

According to the equation of continuity for an incompressible fluid in steady flow, $A_1 v_1 = A_2 v_2$.

At the narrowest section (throat) of the Venturi-meter, the cross-sectional area $A$ is minimum. Therefore, the velocity $v$ of the fluid is maximum.

According to Bernoulli's principle for a horizontal flow, $P + \dfrac{1}{2} \rho v^2 = \text{constant}$.

Since the velocity $v$ is maximum at the throat, the pressure $P$ must be minimum to maintain the constant sum.

Thus, the fluid experiences maximum velocity and minimum pressure at the throat.

Answer: maximum velocity and minimum pressure