Would the answer be A or D and why?

hELP Please if this is correct

PLEASE HELP step by step

Identify the type of hy bridization (sp, sp2,sp3 ) for all N (NITROGEN) atoms of the following compound: A B C D A B C D Identify how many C (CARBON) atoms have sp3 hybridization for the compound below: For the compound below please choose the correct set of chair and flipped chair conformations: (1R,2R)-1,2-dimethylcyclohexane A B C CH3CH3 D A B C D Please type your answer as a letter: A, B, C, D, ..., or I. in alsver il uviculiy. (a) Draw both chair conformations. (b) Determine which chair conformation is more stable. Make sure to keep track of the highlighted bonds in green color. (c) Draw two connected Newman projections for each highlighted bond for each conformation. (d) Fill in the blanks below: The answer for the more stable chair conformation: Hint: More stable conformation means there are more equatorial substituents than axial. The answer for the less stable chair conformation