The correct answer is A. prevalent.
Prevalent means “widespread” or “common.” In this context, it means that dishonesty is common in almost all spheres of public life. This is a serious problem, as it undermines trust in institutions and erodes the fabric of society.
The other options are incorrect because they do not accurately reflect the meaning of the sentence.
- Option B, “practised openly,” is incorrect because it suggests that dishonesty is something that is done in public, when in fact it is often done in secret.
- Option C, “encouraged,” is incorrect because it suggests that dishonesty is something that is condoned or even promoted, when in fact it is generally seen as a negative behavior.
- Option D, “valued highly,” is incorrect because it suggests that dishonesty is something that is considered to be a desirable trait, when in fact it is generally seen as a negative trait.
In conclusion, the correct answer is A. prevalent. Dishonesty is common in almost all spheres of public life, and this is a serious problem.