Which process most likely enabled the formation of the early protists? photosynthesis endosymbiosis conjugation binary fission

Early protists were most likely formed by endosymbiosis. Endosymbiosis is the term for when one organism lives within another organism and they live symbiotically. Early protists likely formed from this manner because eukaryotic organelles like mitochondria are thought to have formed this way - a bacteria may live internally within another cell, and this bacteria later became the mitochondria. It is not photosynthesis because bacteria can also do photosynthesis. It is not conjugation because that is the way bacteria exchange DNA. It is not binary fission because that is a form of cellular division, which bacteria can undergo.

The virus is considered to be are living item since they have hereditary material dnas or rnas. they can imitate and change. they respond to boosts, for example, radiation, chemicals, and warmth. they have antigenic properties. they are proficient to duplicate with a same hereditary constituent.