Before this version, babies in The Sims 4 were often jokingly referred to as "objects" because they were tethered to their bassinets. Version 1.96 changed the game:

Whether you’re a legacy player or just getting started, version 1.96.365.1030 represents a turning point where The Sims 4 finally felt like a complete life simulator. It bridged the gap between generations and gave our digital families the depth they deserved. A Note on File Safety

Files found on third-party sites often carry significant risks of malware or unwanted software.

If you are downloading files with names like part05.rar from unofficial sources:

The history of The Sims 4 is marked by "before" and "after" moments. One of the most significant shifts occurred with version 1.96.365.1030 . While it might look like just a string of numbers in a file name, this update fundamentally changed the way players experience the Sim life cycle by finally delivering one of the community's most-requested features: playable Infants.