The right answer is:
Fisioterapia
This spanish word is translated to physiotherapy .Therefore the complete sentence is:
El doctor dijo que después de la cirugía necesitaré varias sesiones de fisioterapia
(The doctor said that after the surgery I will need several physiotherapy sessions
Physiotherapy is a health discipline that offers a non-pharmacological therapeutic alternative to diagnose, prevent and treat symptoms of multiple ailments, principally through therapeutic exercise. Nevertheless, in physiotherapy sessions, heat, cold, light, water, and sometimes electricity are applied to improve the condition of the pacient.
The other words in the options:
Yeso (plaster)
Hielo (ice)
Vendas (bandage)
Althogh related to the recovery after certain types of surgeries, are not physiotherapy sessions per se.