What does prudent mean?

[Prudy]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #861 "Harriet Tubman", question 1

The road to freedom for black people was paved by Harriet Tubman, born into slavery on Maryland's Eastern Shore, sometime around 1820. She was illiterate because her owner thought it ......... to keep the slaves uneducated.

(a) intriguing
(b) prudent
(c) seizure
(d) implicate

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #861 "Harriet Tubman", answer 1

The road to freedom for black people was paved by Harriet Tubman, born into slavery on Maryland's Eastern Shore, sometime around 1820. She was illiterate because her owner thought it prudent to keep the slaves uneducated.

Correct answer: (b) prudent
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IS THIS THE RIGHT ANSWER

[Beeesneees]

Yes.

prudent = acting with, or showing care and thought for, the future.
The slave owner didn't want his slaves to become educated as that might cause problems for him in the future.
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Cheers m' dears!