This is how to make La bandera plural in Spanish. **Think about rules when it ends in a vowel.

Question

El bandera
Las banderas
Las banderaes
La banderas

Answer 1

In Spanish, to make a noun plural, you typically add "s" if it ends in a vowel and "es" if it ends in a consonant. In the case of "la bandera" (the flag), it ends in a vowel, so the correct plural form is:

Las banderas

So the correct answer from your options is:

Las banderas

The other options are incorrect. "Las banderaes" and "La banderas" do not follow the grammatical rules of pluralization in Spanish.