The fact that at any time during the year, the earth's axis is parallel to its orientation at all other times is called its parallelism, or .

Polarity

Explanation:

Polarity -

It is also known as parallelism .

It refers to the condition , when the axis of the Earth becomes exactly parallel to the former position , as the Earth revolves arounds the Sun ,

Hence , this type of orientation is referred to as parallelism or polarity .

Hence , from the given information of the question ,

The correct term is polarity .

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