Final answer:
The wood with a density of 0.98 g/cm³ will float in both the oil, with a density of 0.90 g/cm³, and in water, with a density of 1.00 g/cm³, due to the property of buoyancy.
Step-by-step explanation:
Whether an object floats or sinks in a liquid depends on its density relative to the density of the liquid. An object will float if it is less dense than the liquid and sink if it is denser than the liquid. Given that the density of the type of oil mentioned is 0.90 g/cm³ and the density of water is 1.00 g/cm³, the block of wood with a density of 0.98 g/cm³ will float in both liquids because its density is less than the density of water but more than the density of oil.
Therefore, the correct answer is D) The wood will float in both the oil and water, as the wood's density is less than that of water and oil, which allows it to float due to the property of buoyancy.