I believe it's D, because without "(especially the corn)" its a complete sentence that still makes sense.
Answer:
1. Style
2. line spacing
3. header
4. Auto complete
5. CTRL+Z
6. press the spacebar only once
7. Not reference mark
8. status bar
9. manual
10. copying
Explanation:
The most likely answer would have to be social sci-fi.
"Him" is the indirect object.
"Lena" is the subject, the person performing the action. "Tell" is the verb, the action performed. "The truth" is the direct object, the recipient of the action. "Him" is affected by the action.
Hope this helps! :)