Question

the passage below describes a process of scientific inquiry. select the part of the passage that describes developing a hypothesis. after walking by some rusted cars parked in the street, janet wondered whether all metals are equally susceptible to corrosion. janet could not recall ever seeing rusted aluminum objects, and she reasoned that aluminum must be less susceptible to corrosion than other metals, like iron. janet gathered some iron nails and aluminum foil. she prepared a saline solution by mixing salt into water. she then poured equal amounts of the solution into four separate cups. next, she placed an iron nail in two of the cups and a piece of aluminum foil in the other two. by the end of the week, janet noticed that the iron nails had rusted significantly, while the aluminum foil showed almost no signs of corrosion. she determined that iron is highly susceptible to corrosion in saline conditions, while aluminum is much more resistant.

Explanation:

A hypothesis is a proposed explanation made on the basis of limited evidence as a starting - point for further investigation. Janet, after observing rusted cars and not seeing rusted aluminum objects, reasoned that aluminum must be less susceptible to corrosion than other metals like iron. This is her proposed explanation which is a hypothesis.

Answer:

Janet could not recall ever seeing rusted aluminum objects, and she reasoned that aluminum must be less susceptible to corrosion than other metals, like iron.