It scientific method if that is a choice. If not it's most likely scientific inquiry.
Answer:
eres
Explanation:
This is eres because eres is used for the tu form. Es is used for el, ella and usted. Soy is used for yo form.
Hope this helps:)
1. Marido
2. Padres
3. nuera
4. yerno
I think brown i might be wrong but i think its brown
