Hi Tasnia! For the first item, the reaction will proceed in to an E2 Zaitsev reaction followed by hydrogenation using Pd catalyst. These type of hydrogenation results to the formation of the syn product where both of the D will be placed to the same configuration. Answer will be C
For number 11, this is an epoxide formation using MCPBA followed by a ring opening the results to addition of two -OHs that are anti to each other. Answer is II and IV (E) since they are written in the axial and equatorial position. Hope that helps!