A

Step 1: Convert the speed from km/h to m/s.
36 km/h = \frac{36 \times 1000}{3600} = 10 \text{ m/s}.

Step 2: Use the formula for centripetal force, which is needed to keep the scooter moving in a circular path. The formula is given by:
\[ F_c = \frac{m v^2}{r} \]
where:
- \( F_c \) is the centripetal force,
- \( m \) is the mass of the scooter and rider (150 kg),
- \( v \) is the velocity (10 m/s),
- \( r \) is the radius of the turn (30 m).

Step 3: Substitute the values into the centripetal force formula:
\[ F_c = \frac{150 \times 10^2}{30} \]
\[ F_c = \frac{150 \times 100}{30} = \frac{15000}{30} = 500 \text{ N} \]

Step 4: Therefore, the horizontal force needed to make the turn possible is 500 N.