Most nights he sits at home and watch telly.
Most nights he goes to cinema.
Most nights he goes to park.
Most nights he plays basketball.
根据《你下班后做什么?》可知:大多数晚上吉姆都坐在家里看电视。
B选项“去电影院”,C选项“去公园”,D选项“打篮球”均不符合题干要求,故选A选项。