Answer:
a golf ball to a baseball
Step-by-step explanation:
We just need to compare the size of the smallest and the largest one in each group. to make the proper scale comparison.
Mercury's circumference: 15,329 km
Mars' circumference: 21,344 km
(The biggest one on the group approximately 1.4 larger compared to the smallest one in the croup)
Now, see the circumference of the objects on other group:
Dust speck circumference : Too small , impossible to measure
Golf ball circumference: 42.6 mm:
Base ball circumference : 230 mm
Beach ball circumference : 550 mm
Basket ball circumference : 750 mm
There is none among them that has a difference of 1.4 in size, so we need to get the closest one possible. Which is Golf ball and Base ball.