What is the meaning of susceptible as it is used in paragraph 4

sus·cep·ti·ble

/səˈseptəb(ə)l/

Learn to pronounce

adjective

1.

likely or liable to be influenced or harmed by a particular thing.

"patients with liver disease may be susceptible to infection"

Similar:

open to

receptive to

vulnerable to

defenseless against

an easy target for

susceptive to

liable to

prone to

subject to

inclined to

predisposed to

disposed to

given to

easily affected by

in danger of

at risk of

at the mercy of

Opposite:

immune

resistant

2.

capable or admitting of.

"the problem is not susceptible of a simple solution"

Similar:

capable of

admitting of

receptive of

open to

Explanation:

my best guess would be: d allusion

makes the most sense