Spines help the cactus get moisture. Spines anchor the cactus in the ground. Spines protect the cactus from animals. Spines support the stems and branches of the cactus.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: How do the spines of a cactus help it survive?
Possibilities:
- Spines help the cactus get moisture.
- Spines anchor the cactus in the ground.
- Spines protect the cactus from animals.
- Spines support the stems and branches of the cactus.

Spines protect the cactus from animals.