Can some one help please i’m in danger !

Distance = Speed × Time

The distance travelled during 5 hours = 0 × 5 = 0 km

The distance travelled during 5 hours = 50 × 5 = 250 km

The distance travelled during 5 hours = 60 × 5 = 300 km

The distance travelled during 5 hours = 60 × 4 = 240 km

answer: option c.

explanation:

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.