Answer:
An individual that faces this situation will experience a variability and an interval as well.
Explanation:
The reasons to support the reinforcement schedule that is being described lie on the fact that there is no standardized nor exact schedule of time in which "I" will be receiving the text message I am waiting for. Also, it could be inferred that the reaction toward the message that comes may be determined by the tasks "I" could be performing, or even if "I" am not in the middle of any activity.
