The most difficult decision$-$making situation is $q,$ ambiguity $,$ because the problem to be solved is unclear, alternatives are difficult to define, and information about outcomes is unavailable.

When a decision must be made without having clear information about the problem, or any information about how probable the outcomes of the decision are, it is being made under ambiguous $q,$ conditions,

Decisions are least likely to fail when they are $q,$ programmed decisions, made under conditions of $q,$ certainty