draw the structure and machenisms of the correct answer

5. What is the major organic product obtained from the following reaction? b. 2 c. 3 d. 4 6. What is the major organic product obtained from the following reaction? CH3C=CCH32molBrr2 a. 2,2,3,3-tetrabromobutane b. 2,3-dibromobutene c. 2,2-dibromobutane d. 2,3-dibromobutane 7. What is the major organic product obtained from the following reaction? a. butanoic acid, CH3CH2CH2COOH b. butanal, CH3CH2CH2CHO c. 1-butene, CH3CH2CH=CH2 d. butanone, CH3CH2COCH3