The objectives that are written more specifically in terms of knowledge, abilities and skills to be learnt by the students are called:

Correct option is B

Contributory objectives are precise and specific goals that detail the expected learning outcomes in terms of skills, knowledge, and attitudes. These objectives support the broader institutional or general objectives by breaking them into achievable components.
Explanation of options: (a) Central objectives – ❌ This term is not typically used in educational taxonomies for specific learning outcomes. (b) Contributory objectives – ✔ Correct. These are detailed goals that contribute to broader educational outcomes. (c) Institutional objectives – ❌ These are broad goals set at the institutional level, not specific to student learning outcomes. (d) General objectives – ❌ These are broader and less measurable than contributory objectives.