Correct Option: C

moving (Adjective) : changing from place to another; causing you to have deep feelings of sadness/sympathy
stationary (Adjective) : not moving; not intended to be moved; not changing in quantity or condition; static
standing (Adjective) : not moving or flowing
speedy (Adjective) : rapid; happening or done quickly or without delay; moving/working very quickly
fast (Adjective) : very quick