Answer:
Complex sentence.
Explanation:
A complex sentence contains one independent clause and one or more dependant clauses.
An independent clause can stand on its own. The information in it makes sense and does not need extra information to understand its meaning.
A dependant clause can not stand on its own. If we read a dependant clause alone, some information is missing, and we cannot fully understand the meaning of this clause.
In this case, the independent clause is -It abruptly collapsed beneath him- and the dependant clause is - As Jim sat down on the rickety old chair-. We can see that the dependant clause is missing information and that it contains the word as, which is a subordinating conjunction that links the clauses and is present in dependant clauses.
Increased isolation, reduced social interaction and social skills, and increased human-to-machine interactions are all a result of an overuse of technology, which has created a wall between many people globally.
Haven't read that story, but going from the title I am going to say A.
Answer:
the dog was frightened by the sudden noise
Answer:
Beware all who enter here.
Explanation:
This is easy, so take a look at the third symbol. It corresponds with the "w" which is a right facing arrow and a dot inside of it.