The correct answer is B) It meant that the Dutch recognized the superiority of the Chinese emperor.
What the Dutch meant by “kowtowed” to the Chinese emperor or his representatives was that the Dutch recognized the superiority of the Chinese emperor.
The Dutch expressed its respect for the Chinese Emperor with a Cantonese gesture called "kowtowed." This was a prostration of reverence where people bend their body, kneel down and barely touch the floor with their head. This gesture is one of the most important signs of respect for authorities or the elders in China. So yes, what the Dutch meant by “kowtowed” to the Chinese emperor or his representatives was that the Dutch recognized the superiority of the Chinese emperor.