Answer:
A book can help you obtain sufficient information than a video since books include more necessary details, as well as longer examples, whereas informative videos tend to keep it short in order to get to the point quickly because viewers lose interest if it takes too long. However, a book is often long, and if it is informative, there is a good probability that there are additional pieces of evidence and information that can help you better understand the topic.
Answer:
they dont know if its good or not
Explanation:
The correct answer, as I see in the text, is 2 and 4 because we see in the claim that encryption began to be necessary in the informational Age, and that governments of the countries can develop this encryption to protect its people.