apple/celery/cucumber salad

This is a new salad my mom discovered recently and i love it and made it today.

So easy, healthy and good to switch up for regular salad

2 teaspoons lemon juice
1/4 cup plain yogurt (I recommend fat free, even greek yogurt is good)
1 teaspoon oil ( it originally had more but i consider the oil optional- even with 1 tsp it was great)
1 cucumber
2 stalks of celery
1 red apple

combine yogurt, lemon juice and oil (if using) and mix in a bowl. Add other ingredients. enjoy!