How do aggressive communicators usually express themselves

When diving into water, it is important to look before diving to avoid that could damage your nervous system deep water underwater hazards living creatures water toys

So i have a lot of answers answered but it says i still need to answer more questions. why is it doing that? how many questions need to be answered?

Which of the following is a health risk associated with ground-level ozone? a.cataractsb.skin cancerc.respiratory illnessd.all of the above