The correct choice is Option 2: 'Make Nikujaga (meat and potato stew) for their family.' The last paragraph says: '今度の週末、教室で習った肉じゃがを、家族に作ってあげようと思っています' (This coming weekend, I am thinking of making the Nikujaga I learned at the school for my family). This matches Option 2 exactly. The pattern '〜てあげる' indicates doing a favor for someone else (in this case, their family).