Altruism is best described as behaving unselfishly to enhance the welfare of others. exerting greater effort when working in the presence of others. experiencing an increasing attraction to people as they become more familiar.

9) a & b

10) true.

11) false.

12) false.

13) true.

14) false.

15) true.

16) true.

don't worry, i'm here to you with your struggles!

good luck!

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.