Respuesta :

I think the correct answer from the choices listed above is option B. The statement "All lines are straight or a triangle has four sides." is a disjunction. The keyword for this type would be "or". Hope this answers the question. Have a nice day.

Answer:

The correct option is B

Step-by-step explanation:

Given the statement      

All lines are straight or a triangle has four sides.

we have to select the proper word for the given statement.

The compound statement which is formed by joining two statements with the connector OR is disjunction statement and The compound statement which is formed by joining two statements with the connector AND is  conjunction statement.

Negation statement is statement which includes not.

IF-then statement is called conditional statement.

Now, here the given statement is formed by joining two statements with the connector OR hence, called  disjunction statement.