What is the embedded server library containing the MySQL server linkable into applications?

Answer: Option D

This question asks about the library that lets you use the MySQL database within your own programs. Think of it like a bridge between your application and the MySQL database.

Out of the given options, the correct answer is libmysqlclient. It is a library containing the MySQL server, allowing you to connect your applications directly to the database.

Let's break down why the other options are incorrect:

Option A: libmysqla - This option is not a standard MySQL library.
Option B: libmysqlb - Similar to Option A, this is not a standard MySQL library.
Option D: libmysqld - This library is related to the MySQL server itself, but it's not designed for embedding into other applications.

So, the answer is Option C: libmysqlclient.