Sea-level changes choose one:

a. are termed eustatic if they are local changes.
b. are periodic, occurring about every 30 million years.
c. have been as great as 300 m (during the phanerozoic eon).
d. are reflected by blankets of marine sediment called methane hydrates.

answer: strength i guess

explanation:

it is the second option.

and 1and 1

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