About the question:
I failed to find the Punnett square, so in my answer and explanation, I will include different cross options.
Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
Biologists think that endosymbiosis gave rise to mitochondria before plastids partly because: (All eukaryotes have mitochondria whereas many eukaryotes do not have plastids)
Endosymbiosis is the process of one organism living in another, a form of parasite. Flies and other insects live inside of fungi, such as mushroom. Your answer is B. fungi. Have a wonderful day :D