To add a symmetry constraint between pairs of curves in a sketch, which command should you utilize?

The command to use for adding a symmetry constraint between pairs of curves in a sketch is the "Make Symmetric" command. This command is specifically designed to establish a relationship where two entities (such as curves or lines) maintain equal distances from a specified line of symmetry. By placing this constraint, the system ensures that if one curve is adjusted, the other automatically adjusts to maintain symmetry.

This feature is particularly useful in design scenarios where balanced aesthetics or functional symmetry is crucial, allowing for an efficient workflow while ensuring accuracy in design intentions. It provides a clear and straightforward way to ensure that modifications on one side of the symmetry are reflected on the opposite side, which is essential in various design applications.

Other commands like "Make Equal" are used to ensure that two entities are of equal length but do not enforce any symmetry about a specific line. "Align Curves" typically relates to positioning or orienting curves rather than establishing a symmetrical relationship. "Mirror Sketch," on the other hand, allows for duplicating entities across a defined line but does not create a constraint that maintains the symmetry dynamically when adjustments are made to one side. Thus, "Make Symmetric" is the appropriate choice for the task described.