讲解一下图中的题目---**Extracted Content:**
**Question 4**
**Question Stem:**
如图, 四边形ABCD内接于⊙O, 如果∠BOD=130°, 则∠BAD的度数是( )
**English Translation of Question Stem:**
As shown in the figure, quadrilateral ABCD is inscribed in circle O (⊙O). If ∠BOD = 130°, then the measure of ∠BAD is ( ).
**Options:**
A. 120°
B. 130°
C. 115°
D. 125°
**Chart/Diagram Description:**
* **Type:** Geometric figure, specifically a circle with an inscribed quadrilateral.
* **Main Elements:**
* **Circle:** A circle is present, with its center labeled as 'O'.
* **Points:** Four points A, B, C, D are located on the circumference of the circle. Another point O is at the center of the circle.
* **Shapes:** A quadrilateral ABCD is formed by connecting points A, B, C, D in sequence (AB, BC, CD, DA). This quadrilateral is inscribed within the circle, meaning all its vertices lie on the circle's circumference.
* **Lines:**
* Segments AB, BC, CD, DA form the sides of the inscribed quadrilateral.
* Segments OB and OD connect the center O to points B and D on the circumference.
* **Angles:** An angle ∠BOD is formed at the center O by segments OB and OD. An angle ∠BAD is an inscribed angle, formed by segments AB and AD at point A on the circumference.