What is the theory of plate tectonics? question 15 options: a. the theory that earth's surface consists of separate plates that move and interact, producing geologic features and events

b. the theory that earth's surface is one large plate that produces geological features and events

c. the theory that states that the continents were once connected in one large landmass and have since moved apart

d. the theory that earthquakes and volcanoes cause plates on the earth's surface to move

A is the answer to your question! hoped this help

A

Explanation:

A.the theory that earth's surface consists of separate plates that move and interact, producing geologic features and events

the answer would be c

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.