Correct Option: D

adjustable (Adjective) : that can be moved to different positions/changed in shape or size
fastidious (Adjective) : meticulous; being careful that every detail of something is correct; not liking things to be dirty or untidy; selective
fussy (Adjective) : too concerned or worried about details or standards
cooperative (Adjective) : involving doing something together or working together with others towards a shared aim
promising (Adjective) : showing signs of being good/successful