B) If you send me an email, then I will finish my program. If you do not send me an email, then I will go to sleep early. Therefore If I go to sleep early. Is this argument valid

This is not a valid argument

Explanation:

if

s: if you send me an email

t: I will finish my program

u: i will go to sleep early

so

s-> t

~s->u

u->?

So its not a valid argument as it is missing some information

and it doesn't reach to the desired conclusion