ANSWER - the answer to the fill in the blanks is certainty and the reason behind it is because of the option C) the decision is routine and follow rules.
EXPLANATION -
Aron , who is the administrative manager at the EMC, makes his decision regarding what to information is to be updated or not on the website , on the basis of certainty. Aron has to make this decision everyday and the outcome the decision taken by him will be know to everyone, so he has to be really careful about what to update and what not to, so he has made a rule for himself to follow the rule of updating information only when he is certain regarding the content.