Answer:
Only Statements B and C are positive statements.
Explanation:
Here we are given a set of statements and we have to find out which all are positive statements,
Positive statements are objective statements that can be tested, amended or rejected by referring to the available evidence.
The first statement is just an opinion of some person and hence not a positive statement.
The second statement has solid evidence and can be considered as a positive statement.
The third statement is also positive statement.
The fourth is again an opinion and hence is not a positive statement.