(1) Before disposable, plastic toothbrushes were invented, some people might not have cleaned their teeth at all, while other might have just done their best by washing their mouths with water and rubbing their teeth with some cloth or a finger. But for Muslims way back in the 6th century, dental hygiene was a very important matter. (2) While the practice of cleaning one' teeth with a piece twig from the Slavadorapersica tree predated Islam, it is the Prophet Muhammad – peace be upon him – who commended its regular use and had Muslims start it. The twig, called a MISWAK or SIWAK in Arabic, was described by him as a purification of the teeth and a means of pleasing God. The Prophet himself – peace be upon him – used the miswak to clean teeth before every prayer, and said that he would order his followers to do the same, had he not at it might over-burden them.
What does Paragraph (2) say about Muslims use of the miswak?

الإجابة الصحيحة هي Muslims used it regularly because of the prophet’s (peace upon him) recommendation..