Can someone please help me?

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. wavelength c. brightness d. intensity

How do hearths affect cultural diffusion? a. a hearth is the destination of cultural diffusion. b. a hearth divides a cultural region in two. c. a hearth is the beginning point of cultural diffusion. d. a hearth is the means of cultural diffusion. e. a hearth is the meeting point of two diffuse cultures.

In this day and age where "fake news "seems to be everywhere, how would you keep preserve accurate information regarding the topic of abnormal psychology that the next generation would utilize appropriate resources to make an informed decision about the of individuals?