In which manner is something described if it is done blatantly?

When something is described as being done blatantly, it means that it is performed openly, obviously, and without any attempt to conceal it. The term implies a lack of subtlety or discretion, making the action conspicuous to others. "Overtly" aligns perfectly with this definition, as it refers to actions or behaviors that are visible, clear, and done in the open without any hidden motives or intentions.

In contrast, the other options describe opposite manners: "subtly" involves doing something in a way that is not obvious or is carefully nuanced; "quietly" implies a lack of noise or commotion; and "secretively" suggests actions taken in a hidden or concealed manner. Thus, these terms do not capture the essence of being blatant.