Here option 3 should be the answer but in key option 2 is mentioned.
Plz clarify once.

Dear student,

It seems your question is incomplete, but I assume the incorrect option is asked to choose.

Please read the following statements to clear your doubt-

2. Collenchyma and sclerenchyma both have cellulose in their cell walls.
3. The collenchyma enables the stretching and elongation of plant organs, while sclerenchyma prevents elongation in plants.

Regards,