Final answer:
It is usually false that 4H membership is required to show in open class competitions, as these are intended for broader community inclusion. However, check event-specific rules.
Step-by-step explanation:
The statement that you must be a 4H member to show in open class is generally false. Open class competitions are typically available to a wide range of participants, including non-4H members. These classes are called 'open' precisely because they do not have the membership restrictions that 4H or other similar exclusive organizations might have. The objective of open class shows is to encourage broader community participation and inclusion. However, specific rules can vary by the organization and location of the show, so always check the rules for the particular event you're interested in.