What distinguishes value chains that are "values$-$based" from those that are not?

Question $27$ options:

a$)$

Open transparency of budgets for firms in chain to determine fair pricing.

b$)$

Dominance of other firms in the value chain by one large firm.

c$)$

Lack of personal connections between producers and consumers.

d$)$

All answers a$,$ b and c$.$