Choose the meaning of the idiom **"the milk of human kindness"** as Lamb uses it. "She feared her husband's nature, that it was too full of the **milk of human kindness**, to do a contrived murder."

The idiom — coined by Shakespeare in *Macbeth* — means *natural human compassion, gentleness, and sympathy*. To be *full of the milk of human kindness* is to be naturally good-natured. Lady Macbeth uses it pejoratively: her husband is *too kind* to commit cold-blooded murder.