Select the most appropriate meaning of the given idiom.

In the limelight

The centre of attraction

The most appropriate meaning of the idiom "in the limelight" is (2) The centre of attraction.

The idiom "in the limelight" refers to being the center of attention or public scrutiny. It is often used to describe someone who is famous or who has recently achieved something noteworthy.

The other options do not fit the meaning of the idiom.

• About to be successful means that someone is likely to achieve success in the near future.
• In a well lit up room means that a room is brightly lit.
• A well kept secret means something that is not known to many people.