Answer:
I took this a couple weeks ago and the answer is your thrid option I believe.
Hope this helps :))))
Explanation:
Mutualism, where both organisms benefit. -Commensalism, where one organism benefits while the other organism is not harmed.
Fern sperms are flagellated, which is why ferns are dependent on water for reproduction. Water serves as a medium in which sperms can reach the egg cell for fertilization. The sperm only needs a thin film of water to swim <span>from the antheridium and to the archegonium</span>.
Well, nosomical infections are infections you get from a hospital or healthcare facility so probably by following standard infection control measures like washing of hands, keeping areas clean/sanitized, wearing PPE when needed. Stuff like that.