Has the another's person real life or just only make up?

[Edita]

English Language Tests, Intermediate level

ESL/EFL Test #270 "Literary Terms (2)", question 2

When someone writes another person's life story, the written work is called a(n) ..........

(a) biography
(b) autobiography
(c) play

English Language Tests, Intermediate level

ESL/EFL Test #270 "Literary Terms (2)", answer 2

When someone writes another person's life story, the written work is called a(n) biography.

Correct answer: (a) biography
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Is it a real person, I mean that the another's person has real life or just only make up?

Edita

[Linda]

Yes, if one person writes about another real person's life story, the work is called a biography: bio mean life.
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