Final answer:
Faith weighed 5 kilograms at birth, which is equal to 5000 grams.
Step-by-step explanation:
At birth, Faith weighed 5 kilograms. To find her weight in grams, we need to convert the unit from kilograms to grams. Since 1 kilogram is equal to 1000 grams, we multiply 5 kilograms by 1000 to get the weight in grams. Therefore, Faith weighed 5000 grams at birth. Therefore, the correct answer is option b) 5,000 grams.