(a)
map(range, map(len, L[:3]))

[[0, 1, 2, 3, 4], [0, 1], [0, 1, 2, 3]]


(b)
L[3:][1][1][4]

e


(c)
map(grow, L[:3], range(1,4))

[['Write'], [['your', 'name'], ['your', 'name']], ['your', 'your', 'your']]


(d)
filter(isLen2, L)

[['your', 'name'], [['and', 'your'], 'student'], 'ID']


(e)
filter(isLen2, L[1::2])[1][0]

I


(f)
reduce(grow, map(len, L[:3]))

[[5, 5], [5, 5], [5, 5], [5, 5]]


(g)
map(len, L).count(2)

3


(h)
L[1] + L[4][0]

['your', 'name', 'and', 'your']


(i)
grow(L[2], 3) + [L[1][0]]

['your', 'your', 'your', 'your']


(j)
grow([L.count("and"), L.count("your")], 3)

[[0, 1], [0, 1], [0, 1]]