Brad and alicia says they are available to babysit on friday night. why does this sentence need revision? 1. the subject and verb do not agree2. the modifier and object do not agree3. it contains a dangling modifier.4. it contains a vague pronoun.

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).

i agree so i wont repert this question