Answer:
A) Less diversity of plants.
Step-by-step explanation:
After a volcanic eruption, lava, mud flows and ash can travel hundreds of miles. On the long term, these sediments can function as fertilizers and cause plant populations to increase. However, an initial consequence (in the short term) is less diversity of plants. This is because the mud and lava can kill plants that surround the volcano, as well as make it very difficult for these to recover.