The correct option is A Flower once and die
Root words :
The word monocarpic is derived from the Greek words, ‘monos’ meaning ‘single’ and ‘karpos’ meaning ‘fruit’.
Monocarpic plants:
Plants which bear flowers and fruit only once in their life cycle are called monocarpic plants. The plants die after their first flowering and production of seeds. Examples of monocarpic binneals include sugar beet, carrots, cabbage etc.
Final answer: b. Flower once and die.