To handle unpredictable testing exceptions, one can use recovery scenarios.

Option A, Do Loop, is a programming construct used to execute a block of code repeatedly. It is not relevant to handling unpredictable testing exceptions.

Option B, Recovery Scenario, is a feature of automation testing tools that allows you to define a set of actions to be taken when a particular exception or error occurs during test execution. This option is the correct answer.

Option C, IFTHEN statement, is a conditional statement used in programming to execute a block of code based on a particular condition. It is not directly relevant to handling unpredictable testing exceptions.

Option D, Selectase statement, is not a valid programming construct or feature of automation testing tools.

Therefore, the correct answer is:

The Answer is: B. Recovery Scenario.