19 Which of the following is a benefit of using a list as a data abstraction in a program? A Lists often allow their size to be easily updated to hold as many data values as needed. B Lists convert all elements to strings so that they can be inspected character-by-character. C Lists prevent duplicate data values from appearing in the list. D Lists are used to store all input data so that there is a running record of all user input. Mark for Review

## Step 1<br />The problem is asking us to identify the correct benefit of using a list as a data abstraction in a program. Let's analyze each option:<br /><br />## Step 2<br />Option A: Lists often allow their size to be easily updated to hold as many data values as needed. This is true. Lists are dynamic data structures, which means they can grow and shrink in size as needed.<br /><br />## Step 3<br />Option B: Lists convert all elements to strings so that they can be inspected character-by-character. This is not necessarily true. Lists can contain elements of any data type, not just strings.<br /><br />## Step 4<br />Option C: Lists prevent duplicate data values from appearing in the list. This is not true. Lists can contain duplicate values.<br /><br />## Step 5<br />Option D: Lists are used to store all input data so that there is a running record of all user input. This is not necessarily true. Lists can be used for many purposes, not just storing user input.