Selecting resources with reliable credentials and expertise is?
a. not important, everyone’s ideas are equally valid
b. only important when you are looking for medical advice
c. important for scientific research only
d. important for any information you look up,, on any topic

D. Important for any information you look up, on any topic.

Explanation:

The resources can be considered as reliable and credentials when they consists of information which comes from an authentic source. Also the resource which has been verified by many reviewers who exhibit special knowledge and expertise in the related field of the topic can be considered as reliable and credential.  

Such a resource can be looked upon for retrieving desired information on any topic.  

the answer is c. nacl