Which of the following can be sources of sediment?

a.
fragments of other rocks

b.
chemicals and minerals dissolved in water

c.
sea shells

d.
all of the above

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.