A buyer offered $225,000 for a seller's property. The seller countered at $250,000. The buyer did not accept the seller's counteroffer. The seller told her broker that she was revoking the counteroffer and accepting the buyer's original offer. Which statement is TRUE regarding this situation? A) The seller can revoke her counteroffer and accept the buyer's original offer up until the time the buyer rejects the counteroffer.

B) The buyer and seller have entered into a contract for $225,000.

C) The seller has breached the buyer's contract, and the buyer can sue to force the seller to take a lower price.

D) The seller cannot now accept the original offer, because it was killed by the counteroffer.

It is widely assumed that people need to engage in intellectual activities such as solving crossword puzzles or mathematics problems in order to maintain mental sharpness as they age. in fact, however, simply talking to other people—that is, participating in social interaction, which engages many mental and perceptual skills—suffices. evidence to this effect comes from a study showing that the more social contact people report, the better their mental skills. which of the following, if true, most seriously weakens the force of the evidence cited? (a) as people grow older, they are often advised to keep exercising their physical and mental capacities in order to maintain or improve them. (b) many medical conditions and treatments that adversely affect a person's mental sharpness also tend to increase that person's social isolation. (c) many people are proficient both in social interactions and in solving mathematical problems. (d) the study did not itself collect data but analyzed data bearing on the issue from prior studies. (e) the tasks evaluating mental sharpness for which data were compiled by the study were more akin to mathematics problems than to conversation.