How can "I could go if I wanted to" be rewritten using "able"?

The response "I would be able to attend if I choose to" effectively transforms the original statement while maintaining the intended meaning. In this rewritten form, "would be able to" indicates that the speaker has the capability or permission to attend, emphasizing the conditional nature of their willingness to go. The use of "if I choose to" reflects the element of choice inherent in the original statement, acknowledging that the decision to go is contingent on the speaker's desire. This mirrors the original meaning of having the ability to go, should they wish to do so.

The other options don't capture the essence of the original phrase as accurately. For example, using "will be able" moves to a future tense, which changes the time frame of the statement. "Could be able" adds an unnecessary layer of uncertainty, and "may be able" implies likelihood rather than ability, which alters the original message. Thus, the chosen transformation keeps the focus on the conditional ability to attend, making it a suitable replacement.