In Iowa, when can you legally use deadly force in self-defense?

In Iowa, the laws regarding self-defense allow for the use of deadly force only in the case of immediate and unavoidable danger of death or great bodily harm. This means that options A and D are incorrect because they are not specific enough and do not require the individual to be in imminent danger. Option B is also incorrect because it is not considered a justifiable reason for using deadly force in self-defense. It is important to note that the use of deadly force is a last resort and should only be used when absolutely necessary for self-protection.