________ is a gap between ideal and actual conditionsAProblemBMysteryCDecisionDExcuse

Based on the options provided, the term that best describes a gap between ideal and actual conditions is often referred to as a "Problem."

Explanation:

1. Problem: This signifies a discrepancy or challenge that arises when the actual state of affairs does not meet the ideal or desired state.
2. Mystery: While a mystery can imply unknowns, it does not specifically refer to a gap between ideal and actual.
3. Decision: This refers to the process of making choices but does not inherently imply a gap.
4. Excuse: An excuse generally provides justification or explanation for a failure or shortcoming, rather than highlighting the disparity between ideal and actual.

Final Answer

The correct answer is A. Problem.