Suppose you're asked to write a nested if statement in R that categorizes a numeric value into 'low', 'medium', 'high', or 'very high'. How would you do it?

To categorize a numeric value into 'low', 'medium', 'high', or 'very high' using nested if statements in R, you can use the following structure: if (value < 5) { 'low' } else if (value < 10) { 'medium' } else if (value < 15) { 'high' } else { 'very high' }. Each condition is checked sequentially, and the corresponding category is returned based on the first condition that is met.