What shape best describes most chromosomes?

Trena is a psychologist, who has conducted research

into the spread of sexually transmitted diseases among teenagers and is presently setting up an educational program for the schools throughout her region. Her program will promote education, prevention, and treatment of the major sexually transmitted diseases. Trena is most likely a(n) psychologist. a. educational b. developmental c. environmental d. community

As you and your friend walk across the street toward the cafeteria, she says, "Oh, I can smell the lobster from here." You, however, can't smell it yet. Which explanation is most plausible??

a. ?Your friend has a lower absolute threshold than you. b. ?Sensory adaptation has decreased your response. c. ?You have a higher just-noticeable difference than she. d. ?Your friend She has a greater sense of subliminal perception than you.