Identifying a substance using its physical properties:
will produce a new substance.
includes lighting the substance on fire to see what happens to it.
will not change the identity of the element.
None of the choices are correct.

i dont know but

explanation:

whoever your teacher is, deserves a raise for using pokemon as an example

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards