1. Kimchi is rich in vitamins and low in calories.

Question

(In this sentence, what is the meaning of the preposition "in"? )

2. Kimchi is chosen as one of the world's five helthiest foods.
(What is the active voice form of this passive voice sentence?)

Answer 1

#1 the prepositional phrase modifies "low"

To make the sentence active voice -
Experts have chosen kimchi as one of the world's healthiest foods.