Katherine has a physics exam tomorrow. However, a free lecture by one of her favorite authors is taking place this evening. Katherine decides to attend the lecture instead of studying for her exam. Which is a correct statement?
Katherine's opportunity cost is the cost of getting to the lecture event itself plus the reduction in her physics exam grade by not studying tonight. T/F

Katherine's opportunity cost is the cost of getting to the lecture event itself plus the reduction in her physics exam grade by not studying tonight. True

Explanation:

Opportunity cost is the cost of foregoing a benefit or incurring loss due to opting an alternative which is next beneficial . Here Katherine is losing in terms of grades in her exam to take the benefit of listening to the lecture , So loss to her grade is the opportunity cost of attending to the lecture and getting benefited.

c. taught scientists many new things about the earth, but not other planets.

explanation:

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.