Which of the following statements are appropriate regarding “Argumentation” in a mathematics classrooms?
A. It can be understood as a line of reasoning that intends to show or explain why a mathematical result is true.
B. It is always helpful in mathematics in the same manner as in other empirical disciplines.
C. It can also be a part of the heuristic approach in mathematics education.
D. It is less useful for elementary grade students as its assessment will be difficult.
Choose the correct option:

Correct option is D

Argumentation is an essential part of mathematics. It is the process of constructing and evaluating arguments to justify mathematical claims. Argumentation can be used to introduce new concepts, to solve problems, and to assess students' understanding.
Therefore, the correct answer is (d).