Based on strength, which of the following is correct?

Think it through first, then pick an option.

Answer and explanation

Correct answer: b strong nuclear > electromagnetic > weak nuclear > gravitational

Strong is strongest, then electromagnetic, then weak nuclear, and gravity is last.

Why the other options are wrong

a electromagnetic > strong nuclear > weak nuclear > gravitational: The strong force is a hundred times stronger than the electromagnetic force, so electromagnetic cannot come first.
c gravitational > weak nuclear > strong nuclear > electromagnetic: This order is backwards: it puts the weakest force first and the strongest last.
d weak nuclear > gravitational > electromagnetic > strong nuclear: Gravity is weaker even than the weak nuclear force, so it cannot sit second.