E. his lateness. "He discussed why John was late" means he spelled out a scenario, a challenge, etc. But 'He discussed The explanation why John was late" means he described a rationale, e.g. when The explanation specified for John's lateness was unclear. Most people have focused on model or grammar https://rylanutqkf.dailyhitblog.com/43308055/top-pet-shop-dubai-secrets