I stepped from plank to plank So slow and cautiously;
The stars about my head I felt,
About my feet the sea.
I knew not but the next
Would be my final inch,
This gave me that precarious gait
Some call experience
What is the theme of this poem?
a. You should be careful when walking on a pier.
C.
It takes experience to know which way to
walk.
none of the above
d.
b. Experience is gained through persevering, even
under dangerous circumstances.

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.  

b is the correct answer