Consider the following code:

Which choice of (A, B, C) allows x + z to run without an error?

What is the output of the following code?

You are given a NumPy array where each row represents a person’s age and height:

Which statement below prints all rows where the age is greater than 35 and the height is greater than 168?

What does the following code do, if df is a DataFrame?

df.fillna(123, inplace=True)

Which of the following lines correctly opens a file named "data.txt" for reading using a context manager?

What is the output of the following code?

Consider the following code. What is the output?

The following function has an issue. Identify the problem and fix it, write the corrected line of code as your answer.

What will be the output of the following code?