The correct answer is C. Physical attractiveness.
Explanation
The matching hypothesis is a theory about interpersonal relationships that states that people tend to mate with people who are similar in physical attractiveness. This theory argues that before mating, people assess themselves, establish their level of physical attractiveness and establish characteristics for potential partners who share this same level of attraction. So, the correct answer is C. Physical attractiveness.
The complete phrase is "The matching hypothesis suggests that people will form relationships with others who are similar in physical attractiveness"
4. The discovery of gold and precious metals sparked infrastructure and population growth.
Towns in deserts would naturally develop near oases because in a desert there is very little water and the water would be required to grow crops for food along with water to drink.
He thought he could free slaves in the rebel states becuz he thought that if he frees slaves than there will be more men in his troops he could use those free slaves to increase the men.and he didn't free slaves in the union part becuz people are already getting mad at him. the reason for this is that all the free slaves are going to take the white peoples jobs in the union.and Abraham didn't want the unions to be more mad at him and eventually go against him