Select the correct answer. Given: Line a and line b intersect Prove: Z1 Z3 A. B. O C. 2 Statements 1. Line a and line b intersect 2. ? 3. 23is supplementary to 22 4. 41/3 Which statement and reason best completes the proof? O D. 4 3 b 2. Z2is supplementary to 24 2. m/2 + m/3 = 180° 2. m/1 + m/4 = 180° Reasons 1. given 2.? 2. Z1is supplementary to 22 3. linear pair theorem 4. congruent supplements theorem. 2. linear pair theorem 2. definition of supplementary angles 2. definition of supplementary angles 2. linear pair theorem