Fill in the blank with an appropriate option.

I believe that we are ________ responsible for our choices.

solely

The correct answer is solely.

The word solely means only or entirely. In this sentence, the speaker is saying that they believe that we are only or entirely responsible for our choices.

The options durably, ordinarily, and profusely are not as appropriate because they do not have the same meaning as solely. For example, the option durably means lasting for a long time, but this is not the same as being only or entirely responsible for something. The option ordinarily means in a normal or usual way, but this is also not the same as being only or entirely responsible for something. The option profusely means in a very large amount, but this is also not the same as being only or entirely responsible for something.