On future generations?

[Rich7]

Test No. errors/inter-6 "The worse it will be", question 4

The influence that this novelist has had in future generations of writers should not be ignored.

(a) influence
(b) in
(c) of
(d) be

Test No. errors/inter-6 "The worse it will be", answer 4

The influence that this novelist has had on future generations of writers should not be ignored.

Correct entry: on
The error was: (b) in

You have not found the error.
The influence that this novelist has had in future generations from writers should not be ignored.
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not ok in the future?

[Alan]

Sorry don't follow your question. It is influence ON and generations OF (used in the possessive sense).
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English as a Second Language
You can read my ESL story Passive Voice

[Bt_Unlock18]

please help me, when do we use a preposition like 'in' and 'on'? thank you...