They all live in the ocean.
Answer:
part-to-whole relationship: tail:mouse / scale:crocodile
item-category relationship: Monday:weekday / Saturday:weekend
cause-and-effect relationship: cut:bleed / burn:irritate
Explanation:
In an analogy, we find a relationship between different things, something that connects them. Let's analyze the analogies above.
- A mouse is a whole that can be divided into several parts: ears, tails, paws, etc. The same goes for a crocodile: teeth, scales, stomach. Thus, with tail:mouse and scale:crocodile, we have a relationship of part to whole.
- There are different days in a week: Sunday, Monday, Tuesday, etc. Those days can be divided under different categories. Monday, for instance, can be categorized as a weekday. However, Saturday would be categorized under weekend since it is not a weekday. Thus, with Monday:weekday and Saturday:weekend, we have an item-category relationship.
- Finally, if you cut yourself, you will most likely bleed. Bleeding is the effect of being cut. Cutting is the cause of bleeding. The same goes for getting burned (cause) and the skin getting irritated (effect). Thus, with cut:bleed and burn:irritate, the relationship is of cause and effect.
I think a biographical dictionary.
A is the correct answer, because it is grammatically correct and the noun/verb agrees.