Select the most appropriate option that can substitute Rising prices are causing great concern

Solution:

The error is in the preposition "on".

❌ Incorrect:
causing great concern on Indian economists

✔️ Correct:
causing great concern to Indian economists

Rule:

The expression cause concern to someone is the correct usage.

Structure:
Cause + concern + to + person

Examples:

• The news caused concern to the public.
• Pollution is causing concern to environmentalists.

Also, great concern is generally used without the article "a".

So:

❌ a great concern → not suitable here
✔️ great concern → correct

Correct Sentence:

Rising prices are causing great concern to Indian economists at the present moment.

Extra Facts:

📘 Common verb + preposition combinations:

• Listen to music
• Depend on parents
• Concern to someone
• Suffer from fever

📘 Vocabulary:
Economists = people who study and analyze the economy.
Correct Answer: D. are causing great concern to Indian economists