Question

what salts are in seawater?
kcl
mgcl
cacl
all of the above
nacl

Explanation:

Seawater contains various salts. Potassium chloride (KCl), magnesium - chloride (MgCl₂, note the correct formula as MgCl is incorrect, it should be MgCl₂), calcium chloride (CaCl₂, note the correct formula as CaCl is incorrect, it should be CaCl₂) and sodium chloride (NaCl) are all present in seawater.

Answer:

D. All of the above