For the sequence starting with 1, which of the following describes how the subsequent terms are formed?

The sequence starting with 1 can be analyzed based on how subsequent terms are formed. The correct answer indicates that the subsequent terms are formed by adding a variable amount to the previous term. This approach allows for flexibility in the growth of each term, as it does not follow a fixed pattern but rather adapts based on the amount being added each time.

For example, if the next term could vary based on different additions (e.g., adding 1, then 2, then 3, etc.), the sequence could have diverse growth patterns, leading to a broad set of possible sequences originating from the initial term of 1. This adaptability can model a range of mathematical situations, from arithmetic sequences where the added amount is consistent to more complex sequences where the amount changes unpredictably.

In contrast, the other options suggest fixed operations that generate more predictable outcomes. Multiplying by 3 would create a rapidly increasing sequence, while subtracting a constant would diminish the value consistently. Doubling the previous term would lead to an exponential growth, which does not apply if the goal is to describe a sequence formed through variable addition. Thus, the nature of the sequence described can vary greatly depending on how the terms are generated, with the option of adding a variable amount