Question 12 at the MSE-biology 9 (method of comparison)

Question EF5FCC on biology-9 sites FIPI:

Prove the relationship of the depicted organisms will allow a method

1. experiment

2. comparisons

3. observations

4. simulation

?

===

Of course, the comparison (the correct answer is number 2).

All organisms live and are not extinct now.

The comparative-anatomical method is our everything!

The observation does not allow to reveal the internal structure, as well as the modeling (it may or may not have been modeled).

The experiment involves changing the conditions.

=====

We'll surrender the OGE on biology for 100!
The channel @zdamna100ogebio will help you with this!