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What is it called when the position is determined by angles between a star and an accurate time reference?

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What is it called when the position is determined by angles between a star and an accurate time reference?

(a) Position fix

(b) Celestial fix

(c) Sun fix

(d) Horizontal fix

I have been asked this question in an interview for job.

Question is taken from Stellar Inertial Navigation Theory in portion Celestial Navigation, Doppler and Altimeter Radars of Avionics

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The correct option is (b) Celestial fix

Best explanation: Navigators on early transoceanic flights used sextants to manually measure star angle with respect to their local vertical. Using the line of sights form two or more stars, along with a star catalog and accurate time reference, the position in Earth latitude and longitude can be deduced. This was known as celestial fix.

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