Answer:
b. Float
Step-by-step explanation:
If a body has specific gravity of less than 1, then it will float on water. To understand this we must understand relative density. That is the ratio of density of a substance to the density of reference material. We usually take water as reference material. Water has density 1g/cm³. It gravity is now less than 1 it will mean that It is less dense than water and hence float.