Answer:
The last line of a proof represents:
The conclusion.
Explanation:
While proving an argument or a statement we proceed in the following steps--
- Firstly we write the condition or the statement that are given to us.
- Then we write the argument that is to be proven i.e. we could provide it with a heading as To prove-- (Argument)
- Then we use certain axioms or corollaries or previous theorems in order to proceed the proof.
- At the last i.e. in the last line of the proof represents the conclusion.
Hence, the correct answer is:
Conclusion.