The Rationale provided by Elsevier for this specific question:
Rationale
The Glasgow Coma Scale (GCS) is used to measure the level of a client’s consciousness and assigns a numerical score for each area of neurological status. The score for opening eyes on sound or speech is a 3. The score assigned for confused verbal responses is a 4. A score of 6 is assigned to the motor response of obeying commands. Therefore, the total score of the client is 13.