Final answer:
The pair that shows a rock with a volume of 5 cm³ is option B) (1 cm³ without rock, 6 cm³ with rock).
Step-by-step explanation:
The pair that shows a rock with a volume of 5 cm³ is option B) (1 cm³ without rock, 6 cm³ with rock). The rock's volume is obtained by subtracting the volume without the rock from the volume with the rock. In this case, 6 cm³ - 1 cm³ = 5 cm³.