Final answer:
The appropriate verb to fill in the blank is "estás" because it expresses a temporary state of being angry.
Step-by-step explanation:
The appropriate verb to fill in the blank in the sentence is estás.
When talking about emotions or temporary states, we use the verb estar. Ignacio is angry with me, which is a temporary state, so we would use estás, the second person singular form of estar.
For example, if we say "Hoy estoy enojado" ("Today I am angry"), we use the verb estar to express a temporary state of anger.
Learn more about Verb conjugation in Spanish