Hello I was looking at a few pairs and I noticed
this sharp drop in the AUD/USD right before my eye
but i’m deeply confused as to what caused this?
Check the news for anything related to aud/usd 
From what I can see in your chart it is 30-40 pips move, which is not something that significant, so there are so many factors what could initiate those moves.
A sudden, acute imbalance between selling pressure and buying pressure (as is the case for any sudden drop or rise in price). My guess is that that was perhaps a response to some “underlying fundamental” consideration, such as “news”? It’s certainly not a huge one, though?
I also noticed it but no important news released in that time. I think a huge volume was selled caused that drop. But I read this analysis yesterday (received it through email from a broker).
Currently the pair is trading at 0.7275. Traders must monitor the 0.7362 resistance level and the support level of 0.7182 for possible breakouts. A possible scenario would be a movement towards the 0.7293 resistance level, where a break may lead to the 0.7330 area. An alternative scenario could be a movement towards the 07225 support level, where a break may lead to the 0.7195 area.
Not knowing what country or time zone you are in, the Reserve Bank of Australia was having it’s latest release of economic data be known. These moves can be determined by a large bank or institution selling large chunks of currency. At times these moves are with you, other times against you…all a part of trading. Australia, by the way, exports iron ore, which is a part of the metals commodities…when they are in a downtrend, this will affect their currency.
Forex factory is an excellent site to learn all about these data reports that are scheduled to be released in the economic calendar. Click on the folders to go in depth and learn about these reports…I love the intricacies of these perplexing market movers.
Tim