The US President called for a ban on assault weapons and

Solution

The word ‘traumatised’ is correct here, with respect to the context. It means ‘severely shocked and upset in a way that causes lasting emotional pain’. A and D are inappropriate. D means ‘likely to result in success, or showing signs of success’, which is inappropriate here. C and E do not fit grammatically. The US President called for a ban on assault weapons and tighter gun control measures as he stepped into the familiar role of grief counsellor for a traumatised nation after yet another massive shooting.