Hannah is in middle school. Her father treats her to a chocolate sundae each time she brings home a straight-A report card. Hannah's Dad is providing reinforcement.

Hannah's dad is providing POSITIVE reinforcement.

Explanation: Positive reinforcement can be defined as the act of giving encouragement to a person who exhibits a particular behaviour with the result that such behaviour is repeated.

Positive reinforcement strengthens a behavior or certain response.

From the question, Hannah's dad provided positive reinforcement by treating her to a chocolate sundae each time she brings home a straight A report card. This is done solely to motivate Hannah and to increase chances of getting good grades.

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.

answer; the president uses mass media to gain support for policies;