Correct Option: D

temporary (Adjective) : lasting for a short time; not permanent
indelible (Adjective) : permanent ; impossible to forget/remove
decorous (Adjective) : polite and appropriate in a particular social situation ; not shocking ; proper
surprising (Adjective) : causing surprise
concerted (Adjective) : done in a planned and determined way, by more than one person, government, country, etc.