To determine your weight on Mars, multiply your mass (68.4 kg) by the gravitational force (3.7 N/kg), which equals to 253.08 N, making option b) the correct answer.
To calculate your weight on Mars, you need to multiply your mass by the acceleration due to gravity on Mars. Given your mass of 68.4 kg and the force of gravity on Mars being 3.7 N/kg, the weight can be found by the following calculation:
Weight on Mars = mass × gravitational force on Mars = 68.4 kg × 3.7 N/kg
The final answer, after performing the multiplication, would be your weight on Mars in newtons (N).You weigh 253.08 N on Mars.