Which option can fulfill a B dismount in beam SR 4?

The correct choice for fulfilling a B dismount in beam SR 4 is associated with being connected directly to a C acro series. This implies that if a gymnast performs a C acro series and concludes with a B dismount, they meet the requirement for that specific series composition.

In gymnastics, dismounts have specific requirements based on their difficulty and connection to previous elements. By linking a B dismount directly to a C acro series, the gymnast demonstrates a higher level of skill by incorporating a more complex series immediately before the dismount, thereby fulfilling the score requirements.

While the other options might seem valid at first glance, they either do not meet the specific requirements for a B dismount or deviate from the defined structure necessary for fulfilling the scoring criteria in gymnastics. For instance, simply completing a dance series or replacing the acro series does not necessarily fulfill the criteria set forth for fulfilling a B dismount as it relates to enhancing the gymnast's overall routine complexity and difficulty level.