Which quantifier matches any string that contains at least one n?n+n*n?n{2,3}PreviousSubmit

The quantifier that matches any string that contains at least one 'n' is 'n+'.

Here's why:

1. 'n+' : This quantifier matches any string that contains at least one 'n'. The '+' means one or more of the preceding element.

2. 'n*n' : This quantifier matches any string that contains zero or more 'n's followed by an 'n'.

3. '?n' : This quantifier matches any string that contains zero or one 'n'. The '?' means zero or one of the preceding element.

4. 'n{2,3}' : This quantifier matches any string that contains two to three 'n's. The '{2,3}' means between two and three of the preceding element.