Question

read the excerpt from an informative essay about globalization in china. despite regulations and limits, these new industries have contributed to high smog levels. the amount of smog in beijing is twenty times higher than worldwide safety levels. while manufacturing has led to increased pollution levels, population growth has had an even stronger effect. by 2012, the population of beijing rose to 20 million citizens. which phrase from the excerpt indicates a transition? the amount of smog in beijing... while manufacturing has led to... population growth has had... the population of beijing rose...

Explanation:

The word "while" is a transition - word that shows a contrast between the effects of manufacturing and population growth on pollution.

Answer:

While manufacturing has led to...