What does 'figure out' mean? Is it a phrasal verb?

[Figy]

English Language Tests, Intermediate level

ESL/EFL Test #192 "Phrasal Verbs (D to F)", question 8

The children tried to ......... a way of getting to the concert on their own.

(a) figure out
(b) figure about
(c) figure up

English Language Tests, Intermediate level

ESL/EFL Test #192 "Phrasal Verbs (D to F)", answer 8

The children tried to figure out a way of getting to the concert on their own.

Correct answer: (a) figure out
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what is the correct answer?

[Linda]

The correct answer is (a) figure out.
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[Kitosdad]

The children wondered if they could find their own way to the concert, or some other way to get there.
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