Answer:
The supply of soccer balls increases during the World Cup season
The price-elasticity during that period is low thus, the price increase as a result.
Dairy products are usually standardized and therefore differentiated only by price.
Moderate as consumer can decide but will more likely buy from popular brands
Apple designs and manufactures its chip processors rather than buying them from Intel.
The seller (Intel) isn't conviced by the consumer ( Apple) therefore, the bargain power of the consumer isn't as strong to force the seller to provide.
Explanation:
Buyers tend to delay purchases of luxury goods, such as home entertainment systems, until they are on sale.
Strong bargaining power as they can wait while company's need to sale their produciton to avoid inventory cost and to generate cashflows.
Consumers can easily compare different smartphones' features over the Internet before buying them.
The bargaining power is good as the customer has complete information and can arbitrage betwene models with similar characteristics for the lower cost.