Final answer:
The information rate is 8 bits per second.
Step-by-step explanation:
The information rate can be calculated by multiplying the number of quantized levels by the number of samples per second. In this case, the number of quantized levels is 4 and the number of samples per second is 2.
Information rate = Number of quantized levels x Number of samples per second
Information rate = 4 x 2 = 8 bits per second
Therefore, the information rate is 8 bits per second (c).
Therefore, for 2 samples per second, we would have 2 bits/sample × 2 samples/second = 4 bits per second. Hence, the correct answer is (b) 4 bits per second.