Answer:
B
Step-by-step explanation:
Cliffhangers are often used to create feelings of suspense in readers and make them want to read on and on. They capture the reader's attention more and leave them hanging on the edge of their seats, hoping for more.
B matches the above description.
A and C are actually the opposite of cliffhangers because they say the reader will know how the story ends (but cliffhangers don't reveal the ending) and that readers will feel relief because they know the outcome of a scary event (also wrong). Eliminate A and C.
D has nothing to do with cliffhangers. Cliffhangers could talk about something other than the main characters, so eliminate D.
Hope this helps!