Answer my last 2 question please I will give brainless for who does it

What is the meaning of "full tide" as it is used in this sentence? before i could explain to her the differences of language in this world, she was embarked on the full tide of another subject. a long and involved argument an inaccurate representation a detailed and lively discussion an uncontrollable flood

Who knows how to give brainliest? will give 20 points and of course brainliest!

Could someone me with this question?