Respuesta :
Answer:
C.
Explanation:
Because it's giving a brief description of how it looks and what it's function is, which as listed a seismograph is used to record ground motion such as caused by earthquakes, volcanic eruptions and explosions.
Answer:
Options (A), (B), and (D)
Explanation:
Seismographs are the instruments that are used to determine the magnitude, force, and epicenter of an earthquake. It is commonly used by seismologists. It is comprised of a block (heavy-weight) that is held by a wire and below the weight, there uses a pen that records the amount of disturbance (data) on a curved surface of a graph during the time of occurrence of an earthquake. These data help in deriving the arrival of the P and S waves that enables seismologists or geologists to determine its epicenter.
Thus, the correct answers are options (A), (B), and (D).