Answer:

D. all of these

Explanation:

flood cause Sedimentation and Erosion

As floodwaters carry material from the eroded banks, sediment becomes suspended in the water, which can degrade water quality and lead to harmful on organisms drought & El niño causes global temperatures to rise which will make the water evaporatescausing drought which is a dry period in the natural climate cycle by this frogs wouldn't survive or fertilize eggs