an unpleasant emotion caused by the threat of danger, pain, or harm: I cowered in fear as bullets whizzed past | fear of unemployment is paralysing the economy .
• the likelihood of something unwelcome happening: she observed the other guests without fear of attracting attention.
<span>In active sentences the thing doing the action would be the subject of the sentence and the thing receiving the action is the object. So I would think A would be the best choice.</span>