Question

you have 5 blocks of different sizes and made of different materials. you put them in water and see that some float and some sink (see picture). the object with the smallest density (when compared to water) is a b

Explanation:

Step1: Recall density - floatation principle

Objects with density less than water float, and the more it floats above the water surface, the lower its density relative to water.

Step2: Analyze the floating objects

Among the floating objects A, B, and D, object A is the most above - the water surface.

Answer:

A. A