Answer:
b. 768
Step-by-step explanation:
From the given sequence, we can note that we multiply each term by 4 to get the next one.
This is elaborated as follows:
3 * 4 = 12
12 * 4 = 48
48 * 4 = 192
192 * 4 = 768
This means that the next term in the sequence would be 768
Hope this helps :)