Final answer:
The correct PRETERITE conjugation for tú (buscar) is buscaste.
Step-by-step explanation:
The correct PRETERITE conjugation for tú (buscar) is buscaste. In -car verbs, like buscar, the c changes to qu in the tú form of the preterite. Therefore, the correct conjugation is tú buscaste.
Learn more about PRETERITE conjugation of -car verbs