Identify the factors that do not contribute to the effectiveness of teaching from the options given below:

The teacher's socio-economic background, skill in merely pleasing students, and personal contact do not by themselves make teaching effective, so statements 1, 2 and 4 are the answer.

A teacher's own socio-economic background has no direct bearing on the quality of instruction delivered.

Pleasing students is about winning approval, not about securing genuine learning outcomes.

Personal contact alone, without sound content and method, does not raise teaching effectiveness.

Subject knowledge (statement 3) is a true determinant, since command over content is essential to effective teaching.

Effectiveness rests mainly on mastery of content, method, communication and clarity rather than on background or popularity.