To "rescind" something means to repeal, to cancel. To provide further help, "contend" means to argue something is the truth; "placate" means sooth, calm. 

"Alluring" is an adjective that means beautiful or attractive. The best choice is "cute," since it means attractive. Considering the other choices, "concerning" means causing worry, "unstable" means constantly changing states of being, "responsible" means able to be relied upon to complete tasks, and "deliberate" means done on purpose or working carefully.

The word "dulcet" is an adjective that means sweet and calming and is used to describe sounds and music. The best choice is the word "mellifluous," as it means sweet-sounding. Considering the other choices, "simple" means not complicated, "delicious" mean tasting very good, "soft" means having a fuzzy texture, and "ambiguous" means having multiple ways in which the meaning of something could be interpreted.

“Palpable” means able to be felt or sensed. This is very similar to “tangible,” which means able to be touched. As for the incorrect answer choices, “explicable” means able to be explained; “invulnerable" means not open to being attacked or damaged; “repressible” means able to be repressed or hidden; and “malleable” means able to be manipulated or able to be changed and molded.

“Gaudy” means bright and colorful, although it is usually used in a negative way to suggest something is so uncomfortably bright and colorful as to be tasteless. So, "colorful" is the correct answer. As for the other answer choices, “shameful” means embarassing or causing shame; “meaningful” means important, significant, or containing meaning; “suspenseful” means causing anxiety due to not knowing what will happen; and “awful” means terrible. (Note how the suffix "-ful" generally means full of.)

“Garish” means tastelessly showy and flashy and thus not having good taste. Thus, "tasteless" is the best synonym amongst the given answer choices. As for the other answer choices, “furtive” means secretive or trying to avoid notice; “implacable” means unable to be appeased; “fruitless” means completely unsuccessful; and “essential” means necessary.

"Gossamer" and "translucent" both mean luminous or see-through. "Opaque" means clouded or muddy. "Brusque" means curt or surly. "Assiduous" means hard-working or diligent. "Abrogate" means to formally put an end to. 

"Ossified" and "petrified" both mean hardened or bony. "Pliable" means bendable or adaptable. "Nefarious" means heinous or sinful. "Prodigal" means wasteful or reckless. "Tortuous" means twisted or complicated.

"Unctuous" and "oleaginous" both mean oily or slick. "Blunt" means straightforward or candid. "Ingratiating" means fawning or servile. "Tendentious" means biased or prejudicial. "Tortuous" means twisted or complicated. 

"Sinewy" and "brawny" both mean tough or stringy. "Germinal" means budding or initial. "Irksome" means annoying or irritating. "Mutinous" means rebellious or defiant. "Personable" means friendly or sociable.