a) It is not a valid class
b) It maintains the insertion order and guarantees uniqueness
c) It provides a way to store key values with uniqueness
d) The elements in the collection are linked to each other
Meghna MittalBegginer
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a) It is not a valid class
b) It maintains the insertion order and guarantees uniqueness
c) It provides a way to store key values with uniqueness
d) The elements in the collection are linked to each other
b
Explanation: Set is a collection of unique elements.HashSet has the behavior of Set and stores key value pairs. The LinkedHashSet stores the key value pairs in the order of insertion.