Which of the following statements most accurately describes the requirement for the documentation of minors' assent to participate in research?
documentation is required unless waived by an irb.
parents must approve written documentation.
federal regulations do not require the documentation of minors' assent.
to protect minors documentation is always required.

Federal regulations do not require the documentation of minor's assent.

Explanation:

According to the federal regulations, documentation of minor's assent is necessary. However, there are requirements for additional protection for children involved in research. The permission from guardian is made necessary when it comes to minor's assent and children should be provided with proper information before they become a part of the research.

uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -