the time interval characterized by a diverse multicellular biota is the hadean. phanerozoic. proterozoic…

Brief Explanations:

The Phanerozoic eon is known for its diverse multicellular life - forms. The Hadean was a time of a very hot and inhospitable Earth with no complex life. The Proterozoic saw the emergence of some eukaryotic life but not the high - diversity multicellular life of the Phanerozoic. The Precambrian is a broad term for the time before the Phanerozoic and includes the Hadean, Archaean, and Proterozoic, with less diverse multicellular life compared to the Phanerozoic. The Archaean had mainly simple prokaryotic life.

Answer:

B. Phanerozoic