Answer:
B. va
Step-by-step explanation:
Hoy, Lisette va a la bibioteca para estudiar.
Translation
Today, Lisette goes to the library to study.
Although all the options belong to the infinitive verb "ir", the only one conjugated correctly according to the person is "va" since it is used for third person of the singular (in this case she), as for verbal time all the options they belong to the present indicative of Spanish.