Question

How many geometrical isomer of $\left(X\right)$ is possible?

Answer 1

So there will be $4$ geometrical isomers i.e. "EE", "EZ", "ZE" and "ZZ" isomers. The formed $diol$ in th $1^{st}$ Step involving reactions of the aldehyde with Grignard reagent can undergo elimination reaction to give stabilized alkenes. The alkenes are stabilized by phenyl ring.