Final answer:
When you are not certain of an answer, it is not a good idea to express an opinion or speculate when something will occur if a customer asks.
Step-by-step explanation:
False. When you are not certain of an answer, it is not a good idea to express an opinion or speculate when something will occur if a customer asks. As a professional, it is important to provide accurate information and not make assumptions that may mislead the customer. Instead, it is better to admit that you are uncertain and offer to find the answer or direct the customer to someone who may have more knowledge on the subject.