Answer :
Final answer:
The expression 'darken the door' means to enter a house or building, often with unwelcome connotations. 'Plump ark by the keel' is unrelated to 'darken the door' and seems to be a nonsensical phrase.
Explanation:
The expression 'darken the door' is an idiom that means to enter a house or building, often implying an unwelcome or unpleasant visit. It originated from the belief that when someone with negative energy or bad intentions enters a house, they bring darkness with them. 'Plump ark by the keel' does not have a direct relation to 'darken the door'. It appears to be a nonsensical phrase, possibly meant as a humorous or creative play on words. It is unrelated to the meaning or usage of 'darken the door'.
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