Which of the following statements concerning the dimensions of attitudes is not correct?
a. the easier an altitude is to access, the stronger the attitude usually is.
b. an individual with an ambivalent attitude is often more difficult to persuade.
c. research indicates that a highly ambivalent attitude is easier to change.
d. research indicates that strong attitudes are more resistant to change.

An individual with an ambivalent attitude is often more difficult to persuade is the statement which is not correct.

Explanation:

Yes, a person with uncertain behavior and attitude is often more difficult to persuade. It is proved that a puzzled mindset in not ready to accept the things which are said by someone else for a certain purpose.

An uncertain or doubtful mind always argued and keeps question which makes the things difficult for both the parties. This statement is showing the dimensions of attitudes which is not correct.  Thus in this regard option 2 is correct.

what words? are you talking about to complet what sentence

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.