Sentence:  One particularly damaging, but often ignored, effect of conflict on education is the proliferation of attacks on schools...as children, teachers or school buildings become the targets of attacks. Parents fear sending their children to school. Girls are particularly <WSD>vulnerable</WSD> to sexual violence. 
Meaning of the word marked with <WSD> tags:  More or most likely to be exposed to the chance of being attacked or harmed, either physically or emotionally.