Answer:
3, 2, 5, 4, 1.
Step-by-step explanation:
Sentence Number 3 is obviously the led sentence because it introduces the subject matter, number 2 sentence gives further insight into the subject matter making us understand that the text is about how to help people with halitosis.
Sentence number 5 which is talking about the causes of halitosis follows after number "2" while number "4" talks about how to handle the cause of the problem or concern raised in sentence "5".
Sentence number "1" concludes the subject matter telling us the exact thing that will take care of halitosis which is the embarrassing condition that people are suffering from as stated by sentence "3".
Hence the sequence or order of sentence that forms a paragraph is 3, 2, 5, 4, 1 .