padi IDC dive theory – skills and environment

Q9
A near drowning victim should?
d)   All of the above

Q10
What is the greatest effect on the tidal movements, and what is the primary cause of waves?
a)    The earths rotation / bottom topography
b)   The gravitational pull of the moon and sun / wind
c)    The gravitational pull of the moon and sun / bottom topography
d)   Wind / bottom topography