The xenon compounds that are isostructural with $IBr_2-$ and $BrO_3-$ respectively are

$\begin{array}{1 1}(a)\; linear\; XeF_2\; and\; tetrahedral\; XeO_3&(b)\; bent \;XeF_2 \;and\; pyramidal\; XeO_3\\(c)\;bent\; XeF_2\; and\; planar\; XeO_3&(d)\; linear\; XeF_2\; and \;pyramidal\; XeO_3\end{array}$

linear $XeF_2$ and pyramidal $XeO_3$
Hence (d) is the correct answer.