A descriptive investigation usually starts with . A. making a hypothesis B. collecting observations and data C. deciding what information to collect D. seeing what conclusion the data supports

C. deciding what information to collect

Explanation:

A descriptive investigation is those whose final objective is to describe some factual situation, this type of investigation requires accurate descriptions that not involve inferences about the experiments carried out. Examples of descriptive investigations are those that are driven by the compilation of astronomic, geologic and meteorologic information in order to obtain a specific observation.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock