Answer:
Formal operational.
Explanation:
Cognitive development refers to the development of thought and information processing in children. It includes the development of perceptual skills, knowledge, dispositions, language learning and other aspects that develop a child's brain into an adult brain. As per the question, Peggy is in the 'formal operational' stage of cognitive development that illustrates the fourth and final stage of cognitive development. It starts at the age of twelve and ends with adulthood. At this stage, the child begins to think in a more sophisticated and advanced manner and develops the ability to think abstractly. They gain the ability to manipulate ideas. Thus, Peggy's action displays the growth of reason and logic in her thoughts. Therefore, the answer is the '<u>formal operational' stage</u>.
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If the filtration system does not work, someone can use the document to solve the problem "by repeating the installation steps described in the document and referring to the diagram".
<u>Answer:</u> Option A
<u>Explanation:</u>
Every product is launched in market with it guideline book or pamphlet. It consist basically rest of the important details which is required to access the product with more ease and satisfaction. Electrical appliances or products have installation step book, for the cases when one is unaware about the installation of software or calibration of system. If one face barriers in installation than firstly steps should be repeated as given in book rather than concluding that system is damaged.
We can actually deduce here that the best that describes sentence 1 is: It is a complex sentence.
<h3>What is a complex sentence?</h3>
A complex sentence is actually known to be a sentence that has one independent clause and at least one dependent clause. Complex sentences are used when one makes a complete statement but wants to add more information to the main point.
We see here that "When the twins grew up" is a dependent clause while "they continued to fight" is an independent clause.
Thus, this is a complex sentence.
Learn more about complex sentence on brainly.com/question/10838574
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