Answer: D. Stratified
Explanation:
In the case of stratified sampling the samples are divided into parts or groups and then samples for study are randomly chosen from these groups or parts. Here Kerikeri has divided up her day into three parts and she selects the blood pressure randomly from these parts. This is the example of stratified sampling.
Answer:
It gives a way of allowing a child to have hands on learning
Explanation:
this will help to keep the child entertained
Answer:
In order to protect the face.
Explanation:
The grill spaces on a helmet are small in order to prevent objects to enter inside the helmet. This small grill spaces on the helmet protect the face from very small as well as large objects. The main reason for making grill spaces small on the helmet so that we prevent the entering of the ball and avoid injury of the face so that's why we can say that grill spaces are small on the helmet.
