Question

All lines are straight or a triangle has four sides.

A. conjunction
B. disjunction
C. negation
D. Conditional ?

Answer 1

The correct option is B

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.

Answer 2

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.