Select the option that expresses the given sentence in active voice.
Lovely tunes are composed by Domnica.

The correct option is: Domnica composes lovely tunes.

To convert the sentence from passive voice to active voice, we follow these steps:

1. Identify the components of the passive sentence:
- Subject (receiver of the action): "Lovely tunes"
- Verb phrase (passive): "are composed" (consisting of the auxiliary verb "are" + past participle "composed")
- Agent (doer of the action): "Domnica" (introduced by the preposition "by")

2. Determine the tense of the sentence:
The passive verb phrase "are composed" uses the present tense of the auxiliary verb "be" ("are") followed by a past participle. This indicates that the sentence is in the simple present tense.

3. Reconstruct the sentence in the active voice:
- Move the agent ("Domnica") to the subject position.
- Change the verb to its simple present active form matching the new singular subject "Domnica", which is "composes".
- Move the original subject ("lovely tunes") to the object position, directly after the verb.

Putting it all together, we get: "Domnica composes lovely tunes."