Macrophages are cells that play a role in the response of the immune system of mice and other mammals to invasive organisms such as bacteria. unlike other mice, mice that are genetically incapable of making these particular cells do not show elevated levels of nitrates when infected with bacteria.
the statements above, if true, provide the most support for which of the following conclusions?
(a) mice that are unable either to make macrophages or to make them in sufficient numbers will protect themselves from bacterial infections in some other way.
(b) mice that show elevated levels of nitrates can easily fight off most types of bacterial infections.
(c) in mice, macrophages play a role in the production of nitrates or inhibit a process by which nitrates are broken down or otherwise eliminated.
(d) when a healthy mouse becomes infected with an invasive organism, the number of macrophages in the mouse’s body decreases.
(e) injections of nitrates into mice that lack macrophages will not enhance the ability of these animals’ immune systems to fight off infection.

In order to gauge public opinion about how to handle iran's growing nuclear program, a research group surveyed 1010 americans by telephone and asked them to rate the threat iran's nuclear program poses to the world on a scale of 1 to 10. describe the population, sample, population parameters, and sample statistics. identify the population in the given problem. choose the correct answer below.

An employer who is considering hiring eva has asked donna, eva’s former supervisor, for a report on eva. in truth, eva’s work for donna has been only average. however, eva is donna’s friend, and donna knows that eva probably will not get the job if she says anything negative about eva, and donna knows that eva desperately needs the job. further, donna knows that if the situation were reversed, she would not want eva to mention her deficiencies. nevertheless, it has been donna’s policy to reveal the deficiencies of employees when she has been asked for references by employers, and she knows that some of eva’s faults may be bothersome to this particular employer. finally, this employer has leveled with donna in the past when donna has asked for a report on people who have worked for him. should donna reveal deficiencies in eva’s past performance? (remember to use one of the three moral theories acceptable for this test to solve this dilemma. any discussion of any personal opinion, religious perspective, or theory other than the moral theories acceptable for this test will result in a score of "0" for this question.)

Heather has been an active participant in a defined benefit plan for 19 years. during her last 6 years of employment, heather earned $42,000, $48,000, $56,000, $80,000, $89,000, and $108,000, respectively (representing her highest-income years). calculate heather’s maximum allowable benefits from her qualified plan (assume that there are fewer than 100 participants). assume that heather’s average compensation for her three highest years is $199,700. calculate her maximum allowable benefits.