Singular or plural?

Incorrect. 'Information' is not countable in English, so we use it with a singular verb.

Incorrect. Disciplines like economics, statistics, ethics, politics, etc. take a singular verb when they refer to a subject (e.g. being studied at university).

'Advice' is uncountable, so we never put it in the plural. You could say 'pieces of advice', but it sounds less natural than 'more advice'. In some contexts, you can choose something else, e.g. 'tips' or 'recommendations'.

Incorrect. 'News' is uncountable, so needs a singular verb.

Incorrect. Note that 'statistics' can be used in the singular when it refers to an academic subject or discipline, e.g. 'statistics is a very popular subject'.

Incorrect. 'Crossroads' looks plural because of the 's', but it's actually a countable noun used with a singular verb. When it's used literally (to refer to a road junction), you will encounter it both in the singular ('at the end of the road there's a crossroad, and you need to turn right') and in the plural ('at the crossroads, turn left').

Incorrect. 'Summons' is one of those words that looks plural because of the 's', but is actually singular. There's no such word as 'a summon'.

Incorrect. 'Software' isn't countable, so you can't say 'a new software', but you could say 'a new piece of software'.

Incorrect. 'Money' in the singular exists (of course!), but in a formal context like this, we would use it in the plural. Here's another example: 'No moneys have been paid from the legal aid fund'. Since 'moneys' (plural) is formal, it collocates well with verbs like 'disburse'.

Incorrect. The indefinite pronoun 'everyone' takes a singular verb. If you used 'all' ('all the people in the room were blonde'), that would be plural, but 'everyone' is the concept of 'every single person' - so singular. Think of 'everyone' as equivalent to 'each person' (again, singular).

Incorrect. After indefinite pronouns like 'everybody' or 'no-one', use 'they' (+ plural verb).

Incorrect. Avoid double negatives like 'nobody didn't'.

This is a bit of a trick question. Normally, you would avoid a double negative, so the correct version would be 'nobody wants anything'. But 'nobody wants nothing' is grammatically correct; it just has a different meaning. It means 'everybody wants SOMETHING' (i.e. there isn't a single person in the world who doesn't want ANYTHING). I think you're unlikely to encounter it, because native speakers are more likely to say 'nobody doesn't want ANYTHING'.