Select the option that expresses the given sentence in direct speech.

The announcer requested the audience to switch off their mobile phones for the next two hours.

The announcer said to the audience, “Please switch off your mobile phones for the next two hours.”

The most appropriate option to express the given sentence in direct speech is:

The announcer said to the audience, "Please switch off your mobile phones for the next two hours."

The other options are incorrect:

• The announcer said to the audience, “You all switch off your mobile phones for the next two hours.” - This is incorrect because the word "all" is unnecessary in this context.
• The announcer told the audience, “You have to switch off your mobile phones for the next two hours.” - This is incorrect because the verb "told" is used to express a command, but the announcer is making a polite request.
• The announcer said to the audience, “You can switch off your mobile phones for the next two hours.” - This is incorrect because the modal verb "can" is used to express permission, but the announcer is making a request.