This question is really asking you to separate anxiety features from depressive features.
suicidal intent: correct answer. This belongs to depressive illness, not anxiety neurosis, which is why it is the exception.
panic attacks: a genuine feature of anxiety neurosis, so it is excluded from the answer.
multiple somatic complaints: anxious patients commonly present with bodily symptoms rather than naming their worry directly, so this too is a real feature.
over-concern: excessive worry is essentially the definition of the disorder, so this is expected and not the exception.