pronounced vs pronouncing

[Bhikkhu1991a]

English Language Tests, Intermediate level

ESL/EFL Test #883 "The History of Coffee", question 8

Arabica coffee is preferred by 80% of the world's producers, while only 20 % prefer the Robusta coffee beans.Although, the Robusta has a more ......... flavor, it also has higher caffeine content.

(a) pronounce
(b) pronouncing
(c) pronounced
(d) pronounces

English Language Tests, Intermediate level

ESL/EFL Test #883 "The History of Coffee", answer 8

Arabica coffee is preferred by 80% of the world's producers, while only 20 % prefer the Robusta coffee beans.Although, the Robusta has a more pronounced flavor, it also has higher caffeine content.

Correct answer: (c) pronounced

Your answer was: incorrect
Arabica coffee is preferred by 80% of the world's producers, while only 20 % prefer the Robusta coffee beans.Although, the Robusta has a more pronouncing flavor, it also has higher caffeine content.
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Hello,

How do we know whether to choose "ed" participle adjective or "ing" participle adjective attributively--for example in this test sentence?

Thank you.

Best wishes,
Bhikkhu1991a.

[Mister Micawber]

Usually by meaning. 'Pronounced' means strong, clear; 'pronouncing' does not.
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Native English teacher at Mister Micawber's

[Bhikkhu1991a]

Hello Mister Micawber,

Thank you for your brief explanation. In fact, I studied the guidelines of Participial adjectives provided by Grammar-quizzes.com. and found that it was fully comprehensive and handy:
1. http://www.grammar-quizzes.com/passive3a.html
2. http://www.grammar-quizzes.com/passive4.html

Thus, I applied it to this test sentence, but unfortunately, it didn't work in this type of construction. They didn't take into account of this exception, I think.

Thank you.

Best wishes,
Bhikkhu1991a.

[Mister Micawber]

Yes, those seem to apply when there is no idiomatic difference in meaning.
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Native English teacher at Mister Micawber's