All the English Vocabulary Profile, all the vocabulary is listed at B2 or lower.
A search in COCA:
1 APPROPRIATE WAY 544
2 APPROPRIATE RESPONSE 541
I found the appropriate response to these situations a long time ago.
3 APPROPRIATE ACTION 450
4 APPROPRIATE LEVEL 345
5 APPROPRIATE TREATMENT 268
6 APPROPRIATE WAYS 175
7 APPROPRIATE RESPONSES 122
8 APPROPRIATE LEVELS 121
9 APPROPRIATE ACTIONS 96
10 APPROPRIATE LANGUAGE 90
11 APPROPRIATE DATA 76
12 APPROPRIATE FORM 75
13 APPROPRIATE SKILLS 51
14 APPROPRIATE FORMS 50
15 APPROPRIATE POINT 38
16 APPROPRIATE CONDITIONS 38
17 APPROPRIATE BEHAVIOUR 24
18 APPROPRIATE SKILL 19
19 APPROPRIATE TREATMENTS 15
20 APPROPRIATE POINTS 13
21 APPROPRIATE LANGUAGES 5
22 APPROPRIATE CONDITION 5
23 APPROPRIATE BEHAVIOURS 1