There are an estimated 1 billion illiterate people in the world. What is the social cost of this level of illiteracy?

The correct answer to this open question is the following.

Although there are no options attached, we can say the following.

There are an estimated 1 billion illiterate people in the world. What is the social cost of this level of illiteracy?

According to some studies, the cost of illiteracy in the world is around $1.19 trillion.

Historians and sociologists consider that this is a big issue on the planet. Around the world, there are approximately 800 million people without basic education. Alone in the United States, the cost is estimated to be $300 billion.

Another important indicator is that 43% of Americans that are illiterate, lived in poverty.

is there a answer choice?

i got 3,4 and 5 as an answer