Final answer:
The mechanical advantage (MA) of an inclined plane with a length of 1.9 m and a height of 0.75 m is calculated to be 2.53. Therefore, the correct option is c (2.53).
Step-by-step explanation:
The mechanical advantage (MA) of an inclined plane can be calculated using the formula MA = length of incline / height of incline. Given the length of the incline plane is 1.9 m and the height is 0.75 m, we would calculate the mechanical advantage as follows:
MA = length of incline / height of incline
MA = 1.9 m / 0.75 m
MA = 2.53
Therefore, the mechanical advantage of the inclined plane is 2.53, which matches option c. There is no need to include the 'm' after the number since mechanical advantage is a dimensionless quantity; it is a ratio of distances.