Help! ASAP! The answer choices are:

A- Cai are used an invalid reason to justify the congruence of a pair of sides or angles.

B- Cai only established some of the necessary conditions for a congruence criterion

C- Cai established all necessary conditions, but then used an inappropriate congruence criterion.

D- Cai used a criterion that does not guarantee congruence.

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  A- Cai are used an invalid reason to justify the congruence of a pair of sides or angles.

Step-by-step explanation:

In step 4, Cai referred to the angles as "alternate interior." In fact, they are "corresponding." The reason used to justify congruence of the angles was invalid.

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.