Explanation:
Box 1: One-to-many
The one-to-many and many-to-one cardinality options are essentially the same, and they're also the most common cardinality types.
Incorrect: A many-to-many relationship means both columns can contain duplicate values. This cardinality type is infrequently used. It's typically useful when designing complex model requirements. You can use it to relate many-to-many facts or to relate higher grain facts. For example, when sales target facts are stored at product category level and the product dimension table is stored at product level.
Box 2: Single
Incorrect:
Bear in mind that bi-directional relationships can impact negatively on performance. Further, attempting to configure a bi-directional relationship could result in ambiguous filter propagation paths. In this case, Power BI Desktop may fail to commit the relationship change and will alert you with an error message.
Reference:
https://docs.microsoft.com/en-us/power-bi/transform-model/desktop-relationships-understand