Do reflexive pronouns always end in self or selves?

[Mayan]

English Language Tests, Intermediate level

ESL/EFL Test #172 "Reflexive and intensive pronouns", question 8

Rachel Carson put on a diver's helmet and explored the reefs of the Florida Keys for ..........

(a) myself
(b) himself
(c) herself
(d) ourself

English Language Tests, Intermediate level

ESL/EFL Test #172 "Reflexive and intensive pronouns", answer 8

Rachel Carson put on a diver's helmet and explored the reefs of the Florida Keys for herself.

Correct answer: (c) herself
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Do reflexive pronouns always end in self or selves?

Mayan

[Conchita]

Yes, they do.

[Saneta]

Florida Keys=-> please explain in this context: Keys?
thank you

[Beeesneees]

Florida Keys - a low-lying reef of islands off the coast of Florida.

http://oald8.oxfordlearnersdictionaries.com/dictionary/the-florida-keys
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Cheers m' dears!