Answer:
Option: D is the correct answer.
D. I and III only
Step-by-step explanation:
- The graph of a sinusoidal function is a smooth periodic graph.
- The graph is continuous all over the x-axis and also it repeats itself after every fixed interval.
From the graph that is provided to us we observe that the graph I is a sinusoidal graph since it is similar to a graph of sine graph.
Also, the graph II is not a continuous graph and hence it can't be a graph of sinusoidal graph.
Also, graph III is similar to a graph of sine function and hence it represent a graph of a sinusoidal graph.
