The answer is the first one because it talks about: using a phone can put others at risk.
A colon suggests that there will be a list that will follow it. Using the words 'such as', 'for example', and 'including' in a sentence also directs the attention of the reader to a list. It will be redundant to use a colon after the word 'including' in a sentence.
Answer:
uhjjdjdbdndnnsnsnnsnsnsnsns
