Hello everyone and thanks in advance for your help.
I've come across this sentence while correcting a document for my workplace:
"All these data and relationships have been gathered"
I've been wondering if "All these" or "All this" is appropriate. Since "data" is invariable I would instinctively use "this", however since we are talking about "data and relationships" I'm quite confused.
I hope this enough detail to make you understand my dilema.