Rules of replacement are acceptable because the rules capture an important idea about logical equivalence. a) true
b) false

The answer is "Option b".

Explanation:

Logically, the replacement of rule is the rule of substitution that could only lead to a specific part of the logical expression, it is identical phrases will start replacing each other within the structure of valid logic.  

answer; the population in brazil is very diverse there are many races and ethnic groups

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services