The correct answers are:
• initiation of translation
During the initiation of translation the small subunit of the ribosome binds to the 5' end of mRNA with the help of initiation factors.
• stability of the mRNA molecule
5’ cap prevents the degradation of mRNA by exonucleases.
• intron splicing efficiency
5’ cap is involved in promotion of 5′ proximal intron excision.
Another function of 5’ cap is the regulation of nuclear export (transport of mRNA from nucleus to cytoplasm).