The correct answer is: B. The more.
The sentence is about the relationship between reading and learning. The more you read, the more you will learn. This is because reading exposes you to new information and ideas, which helps you to expand your knowledge and understanding of the world.
The other options are incorrect because they do not accurately reflect the relationship between reading and learning. Option A, “The Most,” is incorrect because it implies that there is a limit to how much you can learn from reading. Option C, “The lesser,” is incorrect because it implies that the more you read, the less you will learn. Option D, “The less,” is incorrect because it implies that there is no relationship between reading and learning.
In conclusion, the correct answer to the question “The more you read, the more you will learn” is B. The more.