It's the first option, hope this helps :)
Many plants are able to propagate themselves using this method, the asexual reproduction. this method has two main types, which is the vegetative reproduction and the apomixis. vegetative reproduction results in new plants individual without the production of seeds or spores.
Answer:
The first layers of earth are very loose, unconsolidated layers called soil, which is pretty easy to dig into, but as we go deeper we reach the bedrock, which is the hardest part of the soil profile, which is made of hard rocks and matter.This makes it harder to dig more and more deeper.
Explanation: