(Solved): Which reagent/catalyst would be expected to bring about the following conversion? HBr Br2/CH2 ...

Which reagent/catalyst would be expected to bring about the following conversion? $\mathrm{HBr}$ ${\mathrm{Br}}_2/{\mathrm{CH}}_2{\mathrm{Cl}}_2$ ${\mathrm{H}}_2/\mathrm{Pd}$ ${\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}_2{\mathrm{SO}}_4$ Which reagent/catalyst would be expected to bring about the following conversion? ${\mathrm{H}}_2/\mathrm{Pd}$ ${\mathrm{Br}}_2/{\mathrm{CH}}_2{\mathrm{Cl}}_2$ $\mathrm{HBr}$ ${\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}_2{\mathrm{SO}}_4$ Which reagent/catalyst would be expected to bring about the following conversion? ${\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}_2{\mathrm{SO}}_4$ ${\mathrm{H}}_2/\mathrm{Pd}$ ${\mathrm{O}}_2$ $\mathrm{HBr}$ ${\mathrm{Br}}_2/{\mathrm{CH}}_2{\mathrm{Cl}}_2$