Vocabulary and Synonyms

A duct is a tube or passageway for conveying fluids, which is synonymous with a canal in this context. Ocean, river, and sea are natural bodies of water, not conduits.

Benevolence refers to the quality of being well-meaning or kindly, making kindness the direct synonym. Greediness and selfishness are antonyms, while boldness is unrelated.

Disguise means to give a new appearance to hide the true form, which is synonymous with conceal. The other options do not capture the act of masking or hiding.

Demeanor refers to outward behavior or bearing. Behaviour is the direct synonym for this concept.

To struggle is to make forceful or violent efforts to get free or overcome something, which is synonymous with wrestle. The other options are unrelated actions.

Important means of great significance or value. Significant is the direct synonym, while the other options describe things of little value.

Acquiesce means to accept something reluctantly but without protest, which is synonymous with assent. Protest is an antonym, and the others are unrelated.

Gaiety refers to the state of being lighthearted and cheerful, making happiness the correct synonym. The other options describe negative or unrelated traits.

To flatter is to praise someone excessively, often to gain favor. Praise is the closest synonym among the choices.

Populous describes a place that is densely inhabited or thickly populated. Portable means capable of being moved, and a polygon is a geometric shape.

Simple Additive Weighting (SAW) is a common method used in multi-criteria decision analysis to evaluate alternatives by assigning weights to different criteria.

A Context-Free Grammar (CFG) is a formal grammar in which every production rule is of the form A -> alpha, where A is a single nonterminal symbol and alpha is a string of terminals and nonterminals.

Speedometer is an instrument on an automobile or other vehicle for indicating the rate of travel in miles or kilometers per hour.

A dictionary is a reference book that lists words in alphabetical order and provides their definitions. A diary is for personal records, and a directory lists names or addresses.

It means shallow; not profound or thorough.