Final answer:
The least common type of lunar eclipse in North America between 2000 and 2020 is a penumbral eclipse.
Step-by-step explanation:
The least common type of lunar eclipse in North America between 2000 and 2020 is a penumbral eclipse. In a penumbral eclipse, the Moon passes through the Earth's penumbra, which is the outer part of the Earth's shadow. During this type of eclipse, the Moon appears slightly darker, but not completely obscured.
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