Select the most appropriate meaning of the given idiom.

An iron hand

Strict control

The most appropriate meaning of the idiom "an iron hand" is strict control.

This idiom is used to describe someone who exercises a great deal of control over others, often in a harsh or authoritarian way. For example, you might say "The dictator ruled with an iron hand." This means that he exercised complete control over the country, with little or no regard for the rights of his citizens.

The other options are not as accurate descriptions of the meaning of the idiom.

• Alone, without assistance: This is more accurately described by the idiom "on your own."
• Memorising lessons: This is more accurately described by the idiom "learning by rote."
• Straight talk: This is more accurately described by the idiom "to tell it like it is."