"You can earn more money by investing than saving but there is a higher risk of losing you money."

Investing money is a way of reproducing money that you already have in an abundant quantity. In investing money, there are tendencies that you would loose either some section of the money or all the money

Explanation:

Investing money is a way of reproducing money that you already have in an abundant quantity. In investing money, there are tendencies that you would loose either some section of the money or all the money. This is because investment needs money, you need money to get money. The investor wants to take risk not to be in the same place of wealth. The money could be lost by either what's invested into or wrong timing or planning. While, in saving money, there is rarely any possibility of you loosing the money.

the 4th option is the answer

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.