Pls help quickly Alex is an expert in gerontology. He is giving a presentation at an upcoming professional conference. What is MOST likely the topic of his presentation? a. Risk Behaviors of Young Adults and Their Effects on Society

b. Meeting All of Maslow’s Needs to Reach Self-Actualization

c. Common Changes to the Immune System in Late Adulthood

d. Developing Trust and Intimacy in Romantic Relationships

i don't know that i agree with that but what's the question ?

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.