Which sentence is punctuated correctly?

According to my dentist I need to brush my teeth, for at least two minutes.

According to my dentist, I need to brush my teeth, for at least two minutes.

According, to my dentist I need to brush my teeth for at least two minutes.

According to my dentist, I need to brush my teeth for at least two minutes.

Respuesta :

Answer:

The 4th sentence is punctuated correctly.

According to my dentist, I need to brush my teeth for at least two minutes.

Answer:

The 4th sentence is punctuated correctly.

Explanation: bru i am a idiot