Hi there! The correct answer is "nous y allons samedi".
The word "y" replaces the words "au parc", because the word "y" always stands for a location. The place of the word "y" in the sentence is in front of the direct verb.
These two things add up to the following conclusion: the correct sentence is "nous y allons samedi."
Nous y allons samedi. Y replaces = a location (le parc) or a thing as with "en" introduced by a partitive article Nous avons pensé à la maison nous y avons pensé BUT nous avons pensé à Pierre nous avons pensé à lui (it doesn't work with persons, only things.... With persons you have to use "à" + indirect object pronoun = me, te, lui, nous, vous, eux nous parlons avec mes parents = nous leur parlons ............
Complete sentences. Model When I eat salad, I lose weight (lose weight). 1. 11 (pass) his exam. 2. We (finish) our lunch. 3. When children eat a lot of fries, they (grow)! 4. You (choose cheese or dessert? 5. (think) about the problem. 6. My children (grow up) very quickly (fast). 7. You never (obey) me (never)!