Meaning of redundant

[rainy]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #47 "You have to go", question 6

I have been made ......... because my work here is no longer needed.

(a) repellent
(b) reduced
(c) redundant
(d) repeated

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #47 "You have to go", answer 6

I have been made redundant because my work here is no longer needed.

Correct answer: (c) redundant

Your answer was: incorrect
I have been made repeated because my work here is no longer needed.
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tell me the meaning of redundant

rainy

[Conchita]

The adjective 'redundant' means 'more than necessary' and, as in this context, 'dismissed'. The expression 'I have been made redundant' means that I have lost my job because I am not needed any more.

[Prezbucky]

There is redundancy in the following:

Where are you at? ("at" is redundant -- "Where are you?" suffices for the purposes of the query.)

Also, I'd like to thank my mom too. ("also" and "too" mean the same thing -- only one of them is necessary)

He is kind and nice. ("kind" and "nice" mean the same thing, in this context -- only one of them is necessary)
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Billie Jean is not my lover. Hee.

[Dennisnguyen]

It would be alright if i chose "reduced"?
the sense of the sentence is gonna be changed? or what else?
please explain it to me.