When to use comma and period on a sentence?

Use a period at the end of a sentence. You typically use periods when your declaring something.

Examples: I like pizza. I am going to Hawaii next summer.

Use a comma in several different circumstances such as before a coordinating conjunction (FANBOYS), adding on to a sentence, and typically where you want the reader to pause and take a breath.

Example: My favorite sports are football, basketball, and volleyball.

When it is raining you should use an umbrella, or you will get wet.  

I JUST TOOK THIS TEST AND THE ANSWER WAS RHYMING COUPLETS i ONLY GOT TWO WRONG Question NumberYour AnswerAnswerReference 1.CCorrect 2.DCorrect 3.BCorrect 4.DCorrect 5.ACorrect 6.ACorrect 7.CCorrect 8.CCorrect 9.BCorrect 10.BCorrect 11.DCorrect 12.DCorrect 13.CCorrect 14.DCorrect 15.CCorrect 16.CCorrect 17.DCorrect 18.BCorrect 19.AIncorrectSection 5.4 20.AIncorrectSection 5.3Questions Answered Incorrectly 19 WAS C AND NOT SURE ABOUT 20

19.   What is the best theme for Langston Hughes' poem, "I, Too"? A. African Americans will form a movement to end their unfair treatment. B. He prefers to eat in the kitchen. C. Langston Hughes has faith that Dr. Martin Luther King, Jr. will be the answer to his prayers. D. White people will be ashamed of how they've treated African Americans.Student  A  
 IncorrectReference: Section 5.4

20.   What is the rhyme scheme in Emily Dickinson's poem, "Hope is the thing with feathers"? A. ABAB B. AABB C. ABAC D. ABBAStudent  A  
 Incorrect