Answer:
Toast
Explanation:
Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast Toast
and watching Disguised Toast :)
These are two different verbs: one means: to be positioned horizontally (lie) and the other to position something else horizontally, to put something down (lay)
They sound similar and have a meaning connected to being horizontal, that's one reason for their confusion.
Make sure you also don't confuse their past tenses:
Lay: laid
lie: lay
Yes, Lay is the present tense of one of them and the past of the other: that's the other reason for their confusion!
D. Neither he nor his friends studies every day of the week