Which statement best describes saturation?
a. saturation refers to the total rainfall for a year.
b. saturation refers to the lack of rainfall on a given day.
c. saturation occurs only in hot, dry climates.
d. saturation is reached when the amount of water vapor in the air has reached the maximum amount.

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explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.