Which best describes the concept of motivation?
motivation is an internal desire to accomplish all goals you encounter.
motivation accounts for the effort, persistence, and intensity you give a task.
motivation only happens in certain conditions, but you will always know when you feel a desire.
motivation is a way to control other people to do the actions and accomplish the goals that are important.

Adouble-blinded trial for a new indication is conducted under an ind comparing two (2) marketed drugs, at twice the approved prescribed doses. on day 2, subject 603 had difficulty breathing. although it was life-threatening initially, subject 603 was treated and discharged directly from the emergency department after complete recovery. on day 5, subject 20 had a headache, which led to hospitalization and required blood pressure lowering medications. these episodes cannot be explained on the basis of the pharmacological property of either drug or the subjects' medical histories. the investigator would submit an sae report for