Dan and his team are in the process of finalizing a data warehouse for their organization. They call a meeting of all stakeholders. In the meeting, they stress on the importance of clear communication. Dan and his team create a test plan for testing data in the data warehouse. They also arrange training for the business users of the data warehouse.

Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.

Which is a characteristic of free and open-source software licenses? a. the source code is unavailable to everyone b. the source code is available only to the government c. the source code is available to all users d. the source code is constantly modified

Which key should you press to leave the cell as it originally was? a. delete b. cancel c. backspace d. enter