Step 1 (Link parents to identify one sibling set).
“Ram’s father is married to Geeta’s mother.”
Since Sita and Geeta are sisters (same mother), the couple \{Ram’s father, Geeta’s mother\} are the parents of Sita and Geeta.
Ram (and his sibling Shyam) are therefore children of the same couple as Sita and Geeta.
\(\) The four — Ram, Shyam, Sita, Geeta — are siblings (two brothers, two sisters).
Step 2 (Use the marriage information).
“Sita’s brother is married to Priya.”
Sita’s brothers are \{Ram, Shyam\}. One of them is Priya’s husband.
Step 3 (Deduce Ram–Priya relationship).
If Shyam is the one married to Priya, then Priya is Ram’s sister-in-law.
If Ram himself is the one married to Priya, then Shyam is Priya’s brother-in-law — in either case, Priya is a sister-in-law within Ram’s sibling set}.
Given the options do not include “husband–wife,” the determinate relationship from the data and choices is brother and sister-in-law.
\[
{\text{Brother and sister\mbox{-}in\mbox{-}law (Option (d)}}
\]