Question

mandarin: a global language
today, around fifteen percent of the people on our planet speak mandarin chinese. it is the native tongue of approximately one billion people. not only is mandarin the primary language of the peoples republic of china and taiwan, but it is also prevalent in indonesia, thailand, malaysia, singapore, brunel, the philippines, and mongolia. in fact, mandarin is the most commonly spoken language in the world, used by people living in countries around the globe. it stands to reason, then, that more people should learn mandarin chinese as a second language.
in the last fifty years, china has become a powerful, global presence with a
the fourth paragraph is meant to support the authors main claim that more people should learn mandarin chinese as a second language. whats wrong with the authors argument in the fourth paragraph?
the author does not provide specific examples of digitized learning resources.
the argument ignores the fact that online learning programs might not be affordable to all learners.
accessibility to online mandarin learning resources does not support why people should learn it.
mandarin is a complicated language that does not lend itself well to online learning.

Explanation:

The author's main claim is that more people should learn Mandarin as a second language. The fourth paragraph (assuming it's about online Mandarin learning resources' accessibility) has a flaw: Accessibility to online learning resources doesn't directly support the "why people should learn Mandarin" claim. The other options are off - topic (A is about specific examples, B about affordability, D about Mandarin's suitability for online learning, none address the gap between resource accessibility and the reason to learn).

Answer:

Accessibility to online Mandarin learning resources does not support why people should learn it.