Closure Property. The closure property means that a set is closed for some mathematical operation. ... For example, the set of even natural numbers, [2, 4, 6, 8, . . .], is closed with respect to addition because the sum of any two of them is another even natural number, which is also a member of the set.
Correct Answer: Postganglionic fiber is cholinergic. Have a nice day!
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Digestive System hoped i helped in some way.