Final answer:
The student's question involves finding the spring force for a 6mm movement, which requires the spring constant. Hooke's Law (F = kx) is used to relate force to the displacement and spring constant. Without knowing the spring constant, an accurate answer cannot be provided from the given options.
Step-by-step explanation:
The question relates to the topic of spring force and Hooke's Law in physics. To answer it, we use the fact that the force F exerted on a spring is directly proportional to the displacement x from its equilibrium position, as described by Hooke's Law, F = kx, where k is the spring constant. For example, if a force of 70 N causes a displacement of 0.3 m in a spring, the spring constant (k) can be calculated using the formula as k = F / x which results in a spring constant of k = 70 N / 0.3 m = 233.33 N/m (Please note that the value given in your reference information could be a typo as a spring constant should be positive).
In the context of the original question, to find the spring force for a 6mm movement, one would need to know the spring constant. Without that information, it is not possible to provide the correct force from the choices given.