Bertha argues that vitamins and special food supplements are a waste of money. but only yesterday bertha was seen in a health food store, and her friends report that she takes vitamins every day. obviously bertha's argument is crazy.
a) tu quoque(you, too).
b) no fallacy.
c) argument against the person, abusive.
d) appeal to unqualified authority.
e) weak analogy.

1. seasonal

2. frictional unenployment

3. the number of the labor force multiplied by 100 and then subtract the number of unemployed.

4. 4%

5. an increase in prices

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.