Final answer:
The pattern in the sequence 2, 1, 1/2, 1/4 can be described by dividing each term by 2.
Step-by-step explanation:
The pattern in the sequence 2, 1, 1/2, 1/4 can be described by b) Dividing by 2.
To see this, we can observe that each term is obtained by dividing the previous term by 2. For example, 1 is obtained by dividing 2 by 2, 1/2 is obtained by dividing 1 by 2, and 1/4 is obtained by dividing 1/2 by 2. Therefore, the pattern in the sequence is dividing each term by 2.