Question

read the selection from the introduction paragraphs 1 - 6.
rocks on the edge of continental crust are often weaker and less stable than rocks found in the continental interior. this can make them more susceptible to folding and warping.
which option is the best definition of the word \susceptible\ as used in the selection above?
a vulnerable
b sensitive
c manageable
d efficient

Explanation:

The sentence states that rocks on the edge of the continental crust are weaker and less stable, which makes them more "susceptible" to folding and warping. "Vulnerable" means being at risk or easily harmed, which fits the context as the rocks' weakness and instability put them at risk of folding and warping. "Sensitive" usually refers to being easily affected by external stimuli in a more general or sensory way. "Manageable" means capable of being managed, which doesn't make sense here. "Efficient" means doing something well without waste, which is also not relevant to the context of rocks being affected by geological forces.

Answer:

A. vulnerable