Final answer:
The greatest common factor of 14 and 55 is 1, which is the only number that is a factor of both numbers. Therefore correct option is A
Step-by-step explanation:
The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. To find the GCF of 14 and 55, we list the factors of each number:
- Factors of 14: 1, 2, 7, 14
- Factors of 55: 1, 5, 11, 55
We then find the largest factor that is common to both 14 and 55. Looking at the lists of factors, we see that the only common factor between 14 and 55 is 1. Therefore, the correct answer to the question is A) 1, which is the greatest common factor of 14 and 55.