What does the action tool allow you to do in microsoft powerpoint?
a. add animation to clip art and text
b. add actions , such as fly-ins ,between slides
c. create links to other slides, videos, or documents
d. set up slide show transitions
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B.  Add actions , such as fly ins , between slide

the major difference between the two is the objective and the reward of the game. candy crush has a puzzle theme with the objective of meeting a specific quota of points or objects, you are able to gain access to the next level and compete with peers on the process. on duolingo the objective is rather different, you are given sets of questions for you to answer for you to move to the next level and as for the reward, you are able to learn available language as this is an app developed to teach the user about other languages.