The ready list RL contains processes $2$ then $3.$ Consider $(1),(2)$ as independent operations.

$(1)$ Process $2$ requests resource $2.$ After the operation:

Process $2$ is $$ Resource $2\text{'}$s waiting list

Select

Resource $2$ is $$ RL contains the processes Ex $1,2,3$

$(2)$ Process $2$ requests resource $3.$ After the operation:

Process $2$ is

Select

Resource $3\text{'}$s waiting list

Select

Resource $3$ is

Select

RL contains the processes

Ex$.1,2,3$