Answer:
'Estudias' is the second person singular simple present conjugation of 'estudiar' and translates as "you study"/"you are studying"
"Estudies" is the second person of the subjunctive present conjugation of 'estudiar'
Remember that you use subjuntive after the conjuntion que and there is always 2 subject with 2 clauses
Tu estudias indicative present
que tu estudies subjunctive present
Step-by-step explanation: