To find the average weight of the kittens, we need to sum all the weights and then divide by the number of kittens.
The weights of the kittens are: 1.6, 1.4, 1.1, 1.8, 1.3, 1.8, 1.2, 1.4
Now, let's calculate the sum:
\[ 1.6 + 1.4 + 1.1 + 1.8 + 1.3 + 1.8 + 1.2 + 1.4 = 1.6 + 1.4 + 1.1 + 1.8 + 1.3 + 1.8 + 1.2 + 1.4 = 12.6 \]
Next, we divide the total by the number of kittens (8):
\[ \text{Average} = \frac{\text{Total Weight}}{\text{Number of Kittens}} = \frac{12.6}{8} = 1.575 \]
Now, rounding to one decimal place, we get:
1.6 lb.
However, this option is not listed in your choices. Among the options provided, the average weight correctly rounded to one decimal would be 1.5 lb.
So the correct response is: 1.5 lb.