Final answer:
The word that goes with 'insatiable' is 'voracious,' which describes an intense, unstoppable desire, often for food or knowledge. The other options provided don't reflect the meaning associated with 'insatiable.' Option b is the correct answer.
Step-by-step explanation:
The word that goes with insatiable is voracious. These two terms are often used together to describe a greediness or an intense and unstoppable appetite for something, usually food or knowledge. The other options, tangible, ephemeral, and pernicious, are not synonymous with insatiable. 'Tangible' relates to things that can be touched or are clear and definite; 'ephemeral' denotes something short-lived; and 'pernicious' means having a harmful effect, especially in a gradual or subtle manner.
Insatiable and voracious are both adjectives. An insatiable appetite cannot be satisfied, no matter how much is consumed. Similarly, a voracious eater or reader has an extremely strong desire to consume large amounts of food or information. Here, voracious serves as an intensifier to insatiable, reinforcing the idea of an appetite so strong that it seems impossible to satiate.
For example, one might say, 'She has an insatiable, voracious desire to learn about ancient civilizations.' This means that her desire to learn is so great that it seems to have no end or limit.