Which group’s presentation would most likely use a persuasive tone? a family gathering to celebrate a couple’s anniversary a marketing expert making a pitch to potential clients a physicist explaining how scientists make nuclear bombs a history professor discussing the causes of world war ii

 The presentation that would use a persuasive tone is the second one: a marketing expert making a pitch to potential clients.

Explanation: A marketing expert resorts to different strategies to motivate future clients. Marketing experts know the way in which consumers behave and think and they use this knowledge achieve better results. Furthermore, they use persuasive language in their presentations, that is to say they use certain words and expressions to convince people to buy the products and services that a company offers.  

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

- "despite the fact that portia lives in belmont and has many suitors, bassanio believes that he can win her heart. bassanio plans on overcoming his financial obstacles by borrowing money from antonio to travel to belmont. he then plans on marrying portia and becoming wealthy enough to pay off his debts."