Question

if you decide that the box you clicked on is not the correct length, click in the box again and the v disappear. then, click in the box that you think is correct.
click in the box with the blue arrow pointing to 1 yard on this line:
0 1 m 2 m
click in the box with the blue arrow pointing to 1 meter on this line:
0 1 ft 2 ft 3 ft 4 ft
click in the box with the blue arrow pointing to 150 centimeters on this line:
0 1 m 2 m 3 m

Explanation:

Step1: Convert yard to meter

We know $1 \text{ yard} = 0.9144 \text{ meters}$, which is just left of the 1m mark on the first line.

Step2: Convert meter to feet

We know $1 \text{ meter} \approx 3.28 \text{ feet}$, which is between the 3ft and 4ft marks (closer to 3ft) on the second line.

Step3: Convert cm to meter

$150 \text{ cm} = \frac{150}{100} = 1.5 \text{ meters}$, which is halfway between 1m and 2m on the third line.

Answer:

1. For the 1 yard task: Select the box whose blue arrow is just left of the 1m mark (the third box from the left on the first line)
2. For the 1 meter task: Select the box whose blue arrow is between 3ft and 4ft (the fourth box from the left on the second line)
3. For the 150 centimeters task: Select the box whose blue arrow is halfway between 1m and 2m (the third box from the left on the third line)