Adverbs of Manner:
- Attentively

The adverb "attentively" describes the manner in which the action of listening is performed. It tells us how the person is listening, in this case, with attentiveness.

Adverbs of manner modify verbs and provide information about how an action is done. They often end in -ly, although not all adverbs that end in -ly are adverbs of manner.

In the given sentence, "Please, listen to me attentively," the adverb "attentively" describes how the action of listening is being performed. It answers the question "How should you listen?" and provides additional detail about the manner in which the action is carried out.

Adverbs of Place:
There are no adverbs of place in the given sentence.

Adverbs of place provide information about where an action takes place or where something is located. They answer the question "Where?" or "To what place?"

In the given sentence, there is no adverb that provides information about the place where the action of listening is taking place.

Adverbs of Time:
There are no adverbs of time in the given sentence.

Adverbs of time provide information about when an action takes place or how often something happens. They answer the question "When?" or "How often?"

In the given sentence, there is no adverb that provides information about the time when the action of listening is happening or the frequency of the action.

Adverbs of Frequency:
There are no adverbs of frequency in the given sentence.

Adverbs of frequency provide information about how often an action takes place. They answer the question "How often?"

In the given sentence, there is no adverb that provides information about the frequency of the action of listening.

Therefore, the correct answer is option 'A' - Manner. The adverb "attentively" describes the manner in which the action of listening is performed.