Demonstrating conviction, courage, compassion, and care for the community can
a. reduce your capacity to trust others.
b. raise obstacles to constructive interpersonal influence.
c. build a climate of trust.
d. make you vulnerable to your detractors.

The concepts mentioned in the question are all positive concepts (
conviction, courage, compassion, and care ) - so we can expect that the result they have on the community will also be positive - so let's look for the positive effect among  the answers.

It's answer C-  Help build a climate of trust.