Question

accessible means :
improved or brought up to date
possible but not certain to occur
capable of being reached
vile

Explanation:

The word "accessible" means capable of being reached or entered. Analyzing each option, "improved or brought up to date" is about modern - ization, "possible but not certain to occur" is about probability, and "vile" is about moral badness. Only "capable of being reached" matches the meaning of "accessible".

Answer:

capable of being reached