Question

1. given that horse = animal, big has already been executed, which of the following are correct statements? select all correct responses. horse.append(four legs) startswith(horse) range(horse) list(horse) horse0.split() horse.upper() reverse(horse) 5. we dont have to use constant variables, or even put the names of constant variables in all capitals. but doing it this way makes it easier for other programmers to understand how these variables are used. true false 6. the .lower() method changes all the letters in a list to lowercase. true false

Explanation:

Step1: Analyze list - append method

In Python, the append method is valid for lists. Here horse is a list, and horse.append('four legs') will add the element 'four legs' to the list horse. So this is a correct operation.

Step2: Analyze startswith

The startswith method is a string method, not applicable to lists. So startswith(horse) is incorrect.

Step3: Analyze range

The range function expects an integer - like argument (e.g., to generate a sequence of numbers), not a list. So range(horse) is incorrect.

Step4: Analyze list

Since horse is already a list, list(horse) just returns the same list object. It's a valid but not very useful operation in this context.

Step5: Analyze split

The split method is a string method. horse[0] is a string ('animal'), and horse[0].split() can split the string based on whitespace (by default), so it's a valid operation.

Step6: Analyze upper

The upper method is a string method, not applicable to lists. So horse.upper() is incorrect.

Step7: Analyze reverse

In Python, the correct way to reverse a list is horse.reverse() (in - place) or list(reversed(horse)). Just reverse(horse) is incorrect as reverse is not a built - in function that takes a list as an argument in this simple form.

Step8: Analyze constant variable naming

Using all - caps for constant variables is a convention in Python to make it clear to other programmers that the variable should not be modified, so the statement about constant variable naming is True.

Step9: Analyze lower method

The lower method is a string method, not a list method. It cannot change all letters in a list to lowercase, so this statement is False.

Answer:

1. horse.append('four legs'), list(horse), horse[0].split()
2. True
3. False