'A piece of cake' means
ASomething expensive
BSomething very easy
CSomething sweet only
DSomething difficult
Answer & Solution
Correct answer: B. Something very easy
1. This idiom compares a task to eating cake.
2. Both are pleasantly easy.
3. Difficult is the opposite.
4. Hence option A.
_Source: jkchrome.com SSC Idioms and Phrases PDF (Mistral OCR), section on common idioms_