"Él ofreció su casa para el festival."

Technically "party" is "fiesta." I got a heart knocked off for that, too.

I never use any translation offered other than the one at the top of the list. At DL, it sometimes appears the left hand does not know what the right hand is doing.

The "possible translations" are the equivalent of definitions in a dictionary. Not all definitions are appropriate in all contexts.

However, if you put in a translation that you think should be correct and it is not accepted, please report it by clicking the "Report" button in the exercise. The course creators don't read every comment to every sentence discussion, but they do get the reports. Thanks!

Por would mean he is offering to trade his house for the festival.

I think if there is a recipient you use "para". "The apple is for her" = "La manzana es para ella", Ella is a recipient of the apple. I guess "the festival" was the recipient of the "house". https://www.youtube.com/watch?v=_cBJoq479NM That video explains 4 uses of "para" and if a sentence does not fit one of the 4 rules you can usually can get by with "por".

Por vs. Para http://www.studyspanish.com/lessons/porpara.htm

POR - Motion/Direction - Duration of action - Means of action - Support for - Go in search of - Because of / account of / behalf of - In exchange for - Unit measure (kilometros por hora) - Passive (by)

PARA - Destination/direction - Deadline/time (by/for) - To achieve a goal - Recipient (para senor X) - Comparison - Working "para" someone - Opinion

https://spanishdude.com/quickies/por-para/

Tighten your seat belt...

I got the same correct solution. Who uses the word "fest"?

Hi, please use the button to report errors and omissions. The course creators don't read every comment to every sentence discussion, but they do get the reports. Thanks!