Answer:
tiene
Explanation:
Our verb is "tener", so we need to conjugate it accordingly.
"Tener" is a bit of an irregular verb: its "yo" form is very different from its other forms, and it's an "e" to "ie" verb (we change all the first "e's" to "ie's"). So, the conjugations and their respective subjects are:
<em>yo</em> tengo
<em>tú</em> tienes
<em>él/ella/usted</em> tiene
<em>nosotros</em> tenemos
<em>ellos/ellas/ustedes</em> tienen
The subject here is "el maestro", which refers to "the teacher". Because this is a singular subject, we use the <em>él/ella/usted</em> form of "tener", which would be tiene.
