Algebra-1

Question Analysis
This question assesses the student's ability to find the common ratio in a geometric sequence where the terms alternate in sign. The student must correctly divide the terms to find the common ratio.

Key Concept Explanation
The common ratio in a geometric sequence is the constant ratio between each term and its preceding term. It is calculated as for . In this case, the terms alternate in sign, indicating a negative common ratio.

Step-by-step Solution
1. Identify the terms in the sequence: