c. because the object is the most important part of the sentence
Answer:
Explanation:
The pH scale is a range from 1 to 14 that shows the level of acidity, alkalinity or if the substance is neutral.
He should collect a dry sample of a homogeneous particle soil and mixed with required amount of water. Add half a cup of baking soda to the mixture, and observe the reaction. If the soil bubbles or fizzes, it is acidic.
The acidity of the soil can be confirmed by the use of a blue litmus paper. If a blue litmus paper turns red after inserting it into the mixture with baking soda, then the soil is acidic.
Materials: Dry soil, water, baking soda, blue litmus paper, plastic container.
Answer:A,B,D
Explanation:I just guessed hahah
