A teacher who believes in constructivist pedagogy would—

The correct option is "avoid judgements of students solely on the basis of socio-cultural backgrounds."

Constructivist pedagogy is an educational philosophy based on the premise that learners actively construct their own knowledge and meaning from their experiences. To understand why this option is correct, let's break down the principles of constructivism and evaluate the choices:

1. Principles of Constructivist Pedagogy:
- Active Construction: Students are not passive recipients of information; they build understanding by connecting new information with their existing knowledge and cultural contexts.
- Diverse Backgrounds as Resources: Constructivism values the unique experiences, prior knowledge, and socio-cultural backgrounds that each student brings to the classroom.
- Inclusive Environment: An effective constructivist teacher avoids labeling or judging students based on their background. Instead, they foster an equitable environment where every learner's unique perspective is respected and utilized to facilitate learning.

2. Evaluating the Options:
- "avoid judgements of students solely on the basis of socio-cultural backgrounds": This aligns perfectly with constructivist principles. By avoiding rigid judgments based on socio-cultural backgrounds, the teacher recognizes each student's individual potential and prior experiences, promoting a supportive, inclusive, and learner-centered classroom.
- "promote high levels of verbal instructions as primary pedagogy": This represents a traditional, teacher-centered approach (direct instruction/passive learning) rather than active, hands-on, or inquiry-based constructivist learning.
- "promote ‘ability grouping’ of students": Fixed ability grouping (or tracking) often limits student potential and goes against the constructivist belief in collaborative learning and the Zone of Proximal Development (ZPD), where diverse peer interactions enhance cognitive growth.
- "avoid connecting content to real world": Constructivism strongly emphasizes authentic learning, meaning that connecting content to the real world and student experiences is essential for meaningful knowledge construction.

Therefore, a teacher who believes in constructivist pedagogy would focus on understanding individual learner differences and avoid judging them solely based on their socio-cultural backgrounds.