Meera appointed Asad as her agent. She instructed Asad to sell two houses belonging to her at the current market value. According to their agreement, the houses should be sold within a year. After his appointment as an agent, Asad met with a terrible road accident. He became semi paralysed and cannot move without assistance.

Advise Meera on whether she can terminate Asad's appointment.

(10 marks)

What the element and case law can be refer?