Hello i need answer about this text in English thank you

Which of the following sentences contains the essential expression? a. we agreed of course that the party should be a surprise. b. mr. palmeri, our next-door neighbor, grows beautiful roses. c. jack, a football player, is trying for a scholarship. : d. the woman now approaching the microphone will introduce the speaker.

Dogs make wonderful pets because they us stay happy and healthy. the topic sentence is "dogs make wonderful pets." , is this correct? i keep doubting myself.

Choose the option that includes the main claim in “the american promise”