The correct answer is: B. A step by step procedure for solving a problem.
An algorithm is a step-by-step procedure for solving a problem. It is a precise sequence of instructions that must be followed in order to achieve a desired outcome. Algorithms are used in a wide variety of fields, including computer science, mathematics, and engineering.
Option A is incorrect because a computer language is a set of rules that allow humans to communicate with computers. Option C is incorrect because a branch of mathematics is a field of mathematics that studies a particular topic or set of topics. Option D is incorrect because not all algorithms are computer languages, and not all algorithms are branches of mathematics. Option E is incorrect because the correct answer is B.