'Benevolent' means well-meaning and kindly, which is closest to 'Kind'.

'To spill the beans' means to reveal a secret or disclose information.

'Thorough' is a synonym of 'meticulous', meaning showing great attention to detail.

'Validate' means to confirm the truth of something.

Rolling a die introduces uncertainty, making it a 'wild card' outcome.

Be subordinate means to take a back seat.

'In hot water' means to be in trouble or in a difficult situation.

'To call a spade a spade' means to speak the truth directly.

'Throw caution to the wind' means to take a chance or act recklessly.

A 'toss-up' indicates an uncertain outcome, which fits the nature of rolling a die.

'Calm the waters' means to make a situation less tense.

The logical sequence of temperature is 'Hot, Warm, Cool'.

The logical sequence of the stages of a process is 'Start, Middle, End'.

The logical sequence of actions is 'Begin, Continue, End'.

'Oak' is a tree, while the others are types of flowers.

'Arduous' means difficult and requires a lot of effort, making 'difficult' the correct synonym.

'Fluent' is a synonym for 'Eloquent', meaning able to express oneself clearly and effectively.

'Lazy' is the opposite of 'diligent', which means showing care in one's work.

'Pessimistic' is an antonym of 'optimistic', which means having a positive outlook.

'Artificial' means not natural, so the antonym is 'Natural'.

'Car' is not an animal, while the others are pets.

'Benevolent' means kind and well-meaning, so the correct synonym is 'Kind'.

'Fast' is a synonym of 'quick', both meaning moving or capable of moving at high speed.

The sequence lists primary colors, and 'Yellow' is the next primary color.

The sequence represents celestial bodies visible at night, so 'Night' logically follows.

A bird lays eggs in a nest, making 'Egg' the logical next word.