Final answer:
The lower bound for the weight of 16.4 g correct to 1 decimal place is 16.35 g (option a).
Step-by-step explanation:
The lower bound for the weight of 16.4 g correct to 1 decimal place is 16.35 g (option a).
To determine the lower bound, we need to consider the precision of the measurement. Since the weight is expressed to 1 decimal place (tenths), we round down to the nearest lower value. In this case, 16.35 g is the closest lower value to 16.4 g when expressed to 1 decimal place.
Therefore, option a) 16.35 g is the correct lower bound for the weight of 16.4 g correct to 1 decimal place.