Select the most probable cause.-once you have determined that nothing has been changed in the affected area, you should identify the most probable cause. this will allow you to address the problem systematically by eliminating most probable causes first.incorrect answers:b: you need to identify the affected area before you can determine whether anything changed in the affected area.c: you would implement a solution based on a probable cause. thus, you need to select the most probable cause before you can implement a solution.d: you would identify the symptoms in the first step of the troubleshooting process. this can be done by asking some questions to begin to clarify exactly what is happening.references:david groth and toby skandier, network+ study guide (4th edition), sybex, alameda ca, 2005, pp. 415-420.