Answer:
The correct answers are: "relevance to the central idea", "sufficiency to support the purpose", and "credibility of the source".
Step-by-step explanation:
A reader should evaluate evidence according to the "relevance to the central idea" because arguments and examples must be related to the main thesis stated. A reader should also evaluate evidence according to "sufficiency to support the purpose" for it is necessary to have consistent and backgrounded informations to support ideas. Moreover, a reader should also evaluate evidence according to the "credibility of the source" because not all informations available on the internet and alike are true and they may cause problems for effectiveness.