Take a look at the sentence again:
After an especially long week at work, Deepa __________ on the sofa, watching
television and trying to relax. Once the University of Florida football
game began, however, she was jumping up every five minutes to boo referee
calls and cheer effective Gator plays.
Deepa rested on the sofa. Thus, you need a form of lie. Since the sentence is past tense, you need the simple past form. Consult the table below or review the rules.
Infinitive | Definition | Simple Present | Simple Past | Past Participle | Present Participle |
to lay | to put something down | lay(s) | laid | laid | laying |
to lie | to rest or recline | lie(s) | lay | lain | lying |