Write a method called symmetricSetDifference that accepts two Sets as parameters and returns a new Set containing their symmetric set difference (that is, the set of elements contained in either of the two sets but not in both). For example, the symmetric difference between the sets [1, 4, 7, 9] and [2, 4, 5, 6, 7] is [1, 2, 5, 6, 9].

the answer is gallery.

solution:

the right option is a

to adding   a new row to a table we   have to do process last table cell and pressing tab.

this is the process to add new row in the cell:

* to add a row below the cell, click insert below in the rows and columns group.

thus this is the required right answer.

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