Art and culture represent the social life justify

In the following figure , triangle represents teachers , square represents merchants and circle represents social workers. Which number space represents Teachers who are social workers ?

In the following figure, rectangle represents artists, triangle represents accountants, circle represents social workers and square represents fathers. Which set of letters represents social workers who are NOT fathers?

Regeneration in tissue culture represents formation of

Vygotsky's social culture development theory laid the foundation for.