The hypothesis found in the introduction is that heat and pressure change rocks from one type to another. (option D)
A hypothesis is an idea or assumption we have about something. It can and should be tested to be proven true. Hypotheses should be based on information and facts, but they should be tested nonetheless.
In the introduction we are analyzing here, the hypothesis that can be found and that will be tested states that heat and pressure change rocks from one type to another. An example given is that of slate, and the experiment to prove the hypothesis will be done with aluminum foil.
This is the missing introduction for this question:
Metamorphic rocks are rocks which have changed from one type to another. For example, slate is a metamorphic rock made by clay. Scientists believe that heat and pressure are two important elements in changing rocks. The following experiment with aluminum foil will help prove this theory.
Learn more about hypothesis here:
https://brainly.com/question/11555274
