HELP ME PLZZ, 100 POINTS!!

What is a positive result of the scientific revolution

"dogs make wonderful pets because they us stay happy and healthy"the topic sentence is "dogs make wonderful pets" i need writing a sentence that is unrelated to the topic and can be eliminated.

Which of the following sentences requires a colon to be correct? a. in his vacation suitcase, jonathan packed two pairs of pants, four shirts, his swimsuit, and his favorite pajamas. b. when she decided to write a letter, she grabbed her pen, paper, stamps, and address book. c. the new dessert recipe called for equal parts of sugar, cream, peanut butter, and crushed pecans. d. she gathered all of her ingredients to make a smoothie strawberries, blueberries, bananas, and yogurt.