According to the endosymbiotic theory, large prokaryotic cells may have engulfed smaller prokaryotic cells over 1.5 billion years ago. If the smaller
cells survived, the larger cells may have eventually evolved into eukaryotic
cells.
To which of the following organelles did the ingested prokaryotes most likely
give rise?
A. Chloroplasts and the Golgi apparatus
B. Nuclei and mitochondria
C. Lysosomes and nuclei
D. Mitochondria and chloroplasts

mitochondria and chloroplasts

Explanation:

the theory says that the bacteria which used oxygen and changed it to ATP molecules changed into mitochondria and those that used light energy to manufacture their own food changed into chloroplasts.this happened after the small prokaryotes which were bacteria were engulfed by the bigger prokaryotes of which some managed to survive and lived together through symbiosis hence the evolution to mitochondria and chloroplasts creating a eukaryotic cell.

answer; ///i believe that the correct answer is (a) specialized cells)

i think the miocene epoch spans the time from 23 million to 12 million years ago.