How can i make a clear and well organized claim sentence about any topic

1)make proper research and understand your topic

2) know how to write an essay or paragraph

3) now you can write your sentence about the topic with the information you have gathered

explanation: the line "to save the day, harry must get past a scary three-headed guard dog" from the summary best justifies the conclusion that harry potter and the sorcerer’s stone was influenced by ancient greek mythological literature. the three other choices had nothing to do with ancient greek literature - and the words "three-headed guard dog" are what makes that choice the correct answer.