Final answer:
The correct conjugation of the verb 'estudiar' in Present Subjunctive is 'estudie'
Step-by-step explanation:
La mamá de Susana prefiere que ella estudie medicina.
In this sentence, we need to use the Present Subjunctive form of the verb 'estudiar' to match the subjective mood of the main verb 'prefiere'. The correct conjugation of 'estudiar' in the 3rd person singular form (él/ella) is 'estudie'.
Example: Es importante que ella estudie mucho para ser médico.
Learn more about Present Subjunctive conjugation of 'estudiar'