Answer:
The layers were originally horizontal.
Explanation:
We will be correct to say that both layers 2 and 4 were originally horizontal.
As with all sedimentary beds, they are originally laid horizontally in their basin of deposition.
- They both now occur in a folded structure.
- The fold is an anticline and it youngs upward.
- Layer 2 is older than 4
- At the time of deposition, we can know the geometry of the beds by the principle of original horizontality.
- Which suggests that beds are originally laid down flat in a basin.
