the answer the sum of the angles in a triangle is always 180° m < B + m < A + m < C = 180°, let's find m < B, by applying sinus rule 14/sinB=10/sinC, so sinB= 10xsinB = 14 x sinC and therefore, sinB=( 14/10 )sinC =7/2 sin 36° =0.82, so arcsinB=55.08° the answer is C 55.4°