To answer this question, you need to understand the concepts of client-side scripting and server-side scripting.

Client-side scripting refers to the code that is executed on the client's web browser. This code is typically written in languages such as JavaScript and is used to enhance the user experience by adding interactivity and dynamic content to web pages.

Server-side scripting, on the other hand, refers to the code that is executed on the web server. This code is typically written in languages such as PHP, Python, or Ruby and is used to process data, interact with databases, and generate dynamic web pages.

Now, coming to the question, it is true that client-side scripting code and server-side scripting code can coexist and be used on the same page. This is because client-side scripting code runs on the client's browser, while server-side scripting code runs on the server. They serve different purposes and can work together to create a complete web application.

For example, you can use client-side scripting code written in JavaScript to validate user input on a form before it is submitted to the server. Once the form is submitted, the server-side scripting code can process the data, perform any necessary calculations or database operations, and generate a response that is then sent back to the client.

Therefore, the correct answer is A) True.

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• Wrong explanation

To determine the best variable to use throughout the code to track the salaries of the managers, we need to consider both shortness and descriptiveness. Let's analyze each option:

A. manager_salaries - This option is descriptive but not very short. It clearly indicates that the variable tracks the salaries of the managers.

B. SalariesOfManagers - This option is descriptive and follows the camel case convention for variable names. It also clearly indicates that the variable tracks the salaries of the managers. However, it is longer than option D.

C. Salaries_Of_Managers - This option is descriptive and uses underscores to separate words. It is similar to option B in terms of descriptiveness but is longer.

D. mgmtSalary - This option is shorter than the previous options and still maintains descriptiveness by using a combination of letters to represent "management" and "salary".

E. Salary1 - This option is short but not very descriptive. It does not specify that it is specifically tracking the salaries of managers.

Based on the criteria of shortness and descriptiveness, option D (mgmtSalary) is the best variable to use throughout the code to track the salaries of the managers. It is both short and clear in its purpose.

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• Wrong explanation