Outside India, Buddhism was first accepted in

The correct answer is: A. China

Buddhism was first accepted in China in the 1st century CE, during the Han dynasty. It was introduced to China by missionaries from India, and it quickly gained popularity among the Chinese people. Buddhism has had a profound impact on Chinese culture and society, and it remains one of the major religions in China today.

The other options are incorrect because:

• Japan: Buddhism was first accepted in Japan in the 6th century CE, after it was introduced from China.
• Sri Lanka: Buddhism was first accepted in Sri Lanka in the 3rd century BCE, after it was introduced from India by the Indian emperor Ashoka.
• Tibet: Buddhism was first accepted in Tibet in the 7th century CE, after it was introduced from India by the Indian monk Padmasambhava.