By definition Trust is an assured reliance on the truth, character, ability and strength of someone or something. Among all the option the one action most likely to reduce trust is Cut off new ideas if they differ from yours.
When we cutoff new ideas of people we tend to negate their ability and skill.This itself means are not trusting the individuals talent, ability and strength. hence option C seems most logical answer
In its decision, the Supreme Court overruled the Plessy v Ferguson by ruling that the separation of children in public schools on the basis of race was unconstitutional. This ended racial segregation in public schools