What angle has the largest horizontal distance
10º
25º
45º
70º
90º

option C

45°

Equation to find the range of the motion:

R =

Largest value for sineθ is 1, with an input angle of 90 degrees, so we can see that for the longest-range, 2θ should be equal to 90 degrees.

Therefore, θ = 90°/2

                  θ = 45°

Thus, the largest horizontal distance covered is when an object is launched at an angle of 45 degrees.

it is the second option.