Please help Me Don’t really understand this if you can show work I would really appreciate it thank you!

Answer: f. 2:2:2:1
Explanation: The reaction is a single displacement where Cs displaces H to pair up with OH.
The balance chemical equation is:
2 Cs + 2 H2O => 2 CsOH + H2
The number of atoms on both sides are equal.
Cs= 2
H= 4
O= 2