No, package delivery drivers cannot demand to see your parents unless they are specifically instructed to do so by the recipient or if there are legal or safety reasons that require them to do so. In most cases, delivery drivers are only required to deliver the package to the specified address and obtain a signature from the recipient. If there are any concerns about the delivery, it is best to contact the delivery company directly to address the issue. **

The shipping costs for postal delivery can vary depending on the weight of the package, the destination, and the shipping speed selected. Generally, postal services offer different pricing options such as standard, expedited, and express shipping, each with its own associated costs. Additionally, some postal services may offer flat-rate shipping options for certain package sizes. It's best to check with the specific postal service or shipping provider for accurate pricing information based on your specific shipping needs. **

Delivery on demand means that goods or services are delivered to the customer whenever they request it, without any delay. This ensures that the customer receives their order quickly and efficiently. On the other hand, delivery just in time refers to goods being delivered exactly when they are needed, minimizing inventory costs and storage space. Both concepts focus on providing timely and efficient delivery to meet customer needs. **

eBay sellers are not allowed to demand higher shipping costs after a sale has been made. The shipping costs should be clearly stated in the listing, and the buyer should be aware of the total cost before making a purchase. If a seller attempts to demand higher shipping costs after the sale, the buyer can report the seller to eBay for violating their policies. It's important for buyers to carefully review the shipping costs and terms before making a purchase to avoid any potential issues. **

It is generally more effective to make polite requests rather than demanding something. Begging can come across as desperate and may not be well-received, while demanding can be seen as aggressive and off-putting. By politely asking for what you need or want, you are more likely to get a positive response and maintain good relationships with others. **

Yes, one can demand something if they feel it is necessary or important. However, it is important to consider the context and manner in which the demand is made. It is always best to communicate one's needs and expectations respectfully and clearly to increase the likelihood of a positive outcome. **

Klarna's demand can be seen as justified due to the increasing popularity of their buy now, pay later service among consumers. The convenience and flexibility it offers to shoppers, along with the potential for increased sales for merchants, supports the demand for their services. Additionally, Klarna's innovative approach to online shopping and payment solutions has helped them stand out in the market, further justifying their demand. **

Yes, mathematicians are in demand in various industries such as technology, finance, and data science. Their expertise in problem-solving, critical thinking, and analytical skills are highly valued by employers. With the increasing reliance on data-driven decision-making, mathematicians play a crucial role in developing algorithms, models, and solutions to complex problems. As a result, there is a growing demand for mathematicians in the job market. **