Consider the following Turing Machine

The transition q$0-->$q$5-->$ q$6-->$q$7-->$ q$4$ is used to

a$.$ Match $0\text{'}$s in the left and right parts of the input string

b$.$ Match $1\text{'}$s in the left part of the string with $0\text{'}$s in the right part

c$.$ Match $0\text{'}$s in the left part of the string with $1\text{'}$s on the right part

d$.$ Match $1\text{'}$s in the left and right parts of the input string strings