Answer :
Answer: The sentence is built around the simple subject “dad” and simple predicate “gave.” It also contains both a direct object “lunches” and indirect object “us.”
Explanation:
The phrase from the question “unfazed by the morning frenzy before school” is having a simple subject, direct object, and indirect object which are the three roles when it comes to gramatically correct and meaningful sentence.
It is also doesn't giving enough information about what happened before or after so it is considered as the 'adjunct' phrase.
Other statements from the question are not correct because they are not containing the correct function of the words in the phrase.