Step 1: Understanding the Concept:
Family Resource Management distinguishes flexible/conventional social standards from objective quantitative/scientific standards.
Step 2: Detailed Explanation:
Standards in home management:
1. Conventional (Social Cultural) Standards: Traditional, culturally accepted rules of conduct, family routines, and personal household expectations (e.g., A. Starting dinner on time, B. Absolute cleanliness of the house, D. Family prayer at the start of the day).
2. Objective Scientific Quantitative Standards: Standardized, fixed, universally defined physical measurements of weight and area (e.g., C. A kilogram of rice, E. A hectare of land).
Therefore, A, B, and D are conventional standards.
Step 3: Final Answer:
Hence, the examples of conventional standards are A, B and D only, matching option (D).