In what situation will you need to use low gears? when you need more power at a higher speed when you need to fit your vehicle under low- hanging branches when you need more power at a I lower speed when you need less power at a higher speed

# Explanation Step 1<br />The problem is asking us to identify the situation in which low gears would be most beneficial. The options provided are:<br />- when you need more power at a higher speed<br />- when you need to fit your vehicle under low-hanging branches<br />- when you need more power at a lower speed<br />- when you need less power at a higher speed<br /><br />## Step 2<br />Low gears are typically used when a vehicle needs more power at a lower speed. This is because low gears increase the torque, which is the force that causes rotation. This is particularly useful when the vehicle is moving slowly, such as when climbing a hill or when the load is heavy.<br /><br />## Step 3<br />The other options do not accurately describe the use of low gears. For example, needing more power at a higher speed would typically require high gears, not low gears. Similarly, needing to fit your vehicle under low-hanging branches is not related to the use of gears. Lastly, needing less power at a higher speed would also typically require high gears, not low gears.<br /><br /># Answer: <br />'when you need more power at a lower speed'