An important question regarding The Sims 4 trailer

@mny648704
Ok you're talking about the scene at 0:57. Like @simsplayer818 rightfully said, you can customize your sims in any way you like. If you're playing in English you can assign them pronouns. You can create a male presenting sim that can become pregnant, not so long ago the developers added breast scars to add on your sim. There are many possibilities.
The trailer simply shows the different possibilities, nothing more nothing less.