Are teams allowed to select 0, 1, or 2 Liberos when submitting their line-up for the first set?

Selecting 0, 1, or 2 Liberos when submitting a lineup for the first set is indeed allowed. In volleyball, the role of the Libero is specialized; the Libero is a defensive specialist who can substitute in and out of the game without counting against the team's total substitutions.

Teams typically choose to have one Libero, as this player can significantly enhance the team's defensive capabilities, particularly in receiving serves and defense against attackers. However, if a coach opts not to use a Libero at all or wishes to have two Liberos, that is permissible. This flexibility allows teams to adapt to their strategies and player strengths while remaining compliant with the rules.

The other options suggest limitations that do not align with volleyball regulations. Some might imply a requirement for a specific number of Liberos, which does not reflect the current rules. Overall, the ability to choose freely how many Liberos to include is a strategic decision made to optimize the team's performance based on various factors such as player availability and game situation.