Hi, i'm new here! can you guys explain what i can do here?

So u can ask questions on homework or anything else you need help withother students will answer the question and help you. you can also answer questions you know and answer another students question and help themyou also get points the more you help students answer the question

U can ask us questions and u will get answers back and u can give answers

Alpha particles have positive charge, beta particles have negative charge, and answer 4 just doesn’t make sense. thus, you are left with only one possible answer.