I'm pretty sure its C. sonar.
The correct answer is A. Rocks are broken into smaller pieces.
Explanation:
In geography, the term weathering is used to refer to the process in which rocks and others such as soil or mineral break into smaller pieces. This can occur due to chemical agents or due to physical factors. Physical weathering includes factors such as temperature, physical contact or pressure that make rocks and other materials break in smaller pieces without changing the general properties or composition of the material. Additionally, these pieces along with other materials form the soil. According to this, the change that takes place during physical weathering is "Rocks are broken into smaller pieces".
The correct answer is - B. deciding how many cans of vegetables to store at a warehouse.
The quaternary economic activities do not involve physical involvement into the production, trade, or storage of the products, but instead, this type of economic activity is performed strictly by using ones brain, thus making decisions and plans that are going to be performed by the workers in the primary and secondary (occasionally in the tertiary) economic layers.
