In the context of database marketing, when a buyer is segmented on the basis of variable psychographics, it explains .

How does a policy manual an organization? a. it boost productivity. b. it create awareness in employees about the organization’s values. c. it employees achieve targets. d. it safeguards the organization from liabilities.

Look at the far left lane in the picture. explain what the red car is doing and what it needs to do to travel safely.

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.