D) 5
Explanation:
From the given data,
1 rabbit is going towards river not the six eephants. And these 6 elephants saw 2 monkeys are going towards river. Each monkey is holding 1 tortoice.
Hence, number of animals going towards river are 1 rabbit, 2 monkeys and 2 tortoice
= 1 + 2 + 2
= 5.