Mike is studying the differences between the body mechanics of swimmers in pools versus open water. What is his focus on? A.
statics

B.
dualism

C.
statistics

D.
dynamics

where's the following? you gotta add it to know what the choices are

explanation:

falling water hydro = water .. spectcular places these plants are

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.