Meaning of 'tread'

[hanns]

English Idioms and Expressions, Advanced Level

ESL/EFL Test #22 "Egg expressions", question 10

You'll need all your tact in this situation and you'll have to tread on eggs.

(a) be very quiet
(b) be very sensitive
(c) be very sleepy
(d) be very athletic

English Idioms and Expressions, Advanced Level

ESL/EFL Test #22 "Egg expressions", answer 10

You'll need all your tact in this situation and you'll have to be very sensitive.

Correct answer: (b) be very sensitive
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what does tread mean

[Mister Micawber]

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Tread = walk.

Do you have a dictionary?
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Native English teacher at Mister Micawber's