The key to this question is
"exactly one pair"
every shape stated has more than one pair except for the trapezoid
(which has just one)
Answer:
1. i Sampling bias and
ii. Question order bias
2. Non response Bias
3.i. sampling bias
ii.question order bias
4. i. response bias
ii.sampling bias
Step-by-step explanation:
we have basically four types of bias in a research which are;
1. Sampling bias
2. Response bias
3. Non response bias
4. Question order bias
A monomial is an expression with one term. -8c is a monomial.