Most people are ____ in a dentist 's office than in a doctor’s office.A. obviously nervousB. more obviously nervousC. obviously more nervousD .more nervous obviously

步骤 1：理解句子结构
句子的结构是“Most people are ____ in a dentist's office than in a doctor's office.”，其中“than”表明这是一个比较级的句子，比较的是在牙医办公室和医生办公室的紧张程度。

步骤 2：分析选项
A. obviously nervous：明显紧张，但没有比较级。
B. more obviously nervous：明显地更紧张，但“more”和“obviously”位置不正确。
C. obviously more nervous：明显更紧张，符合比较级的结构。
D. more nervous obviously：明显更紧张，但“more”和“obviously”位置不正确。

步骤 3：选择正确答案
根据比较级的结构，正确答案是“obviously more nervous”，即选项C。