Choose the correct sentence.

Sure! Here are the grammatical errors in each of the provided sentences:

1. "He absented from the meeting."
  Grammatical error: Incorrect verb usage.
  Correction: The verb "absent" is not typically used intransitively (without an object). It should be used transitively with an object. So, the correct sentence would be "He absented himself from the meeting."

2. "He absented himself in the meeting."
  Grammatical error: Incorrect preposition usage.
  Correction: The preposition "in" is not appropriate in this context. The correct preposition to use is "from." So, the corrected sentence would be "He absented himself from the meeting."

3. "He was absent from the meeting."
  This sentence is grammatically correct. No errors.

4. "He had absent in the meeting."
  Grammatical error: Incorrect verb form.
  Correction: The past participle form of the verb "absent" is "absented." So, the correct sentence would be "He had absented himself in the meeting."

To summarize:
- Sentence 1: Incorrect verb usage.
- Sentence 2: Incorrect preposition usage.
- Sentence 3: No errors.
- Sentence 4: Incorrect verb form.