Writing Homework Help

I need help with a Writing question. All explanations and answers will be used to help me learn.

Data manipulation in R is an important and foundational topic. What are three functions that can be used for data manipulation in R? In describing these functions, also provide an example of a situation where you might want to apply that function to data. Some analysts prefer to do their data manipulation work in excel or a similar program and then upload the manipulated data into R for analysis whereas others prefer to do all data tasks in one environment, such as R. What are the advantages and disadvantages of each approach? Provide specific examples to support your answer.