Question

david, ping, mandy, and alan are each studying one of the animals shown in the table for a science project.
animal study project

animal	speed	type	habitat
sailfish	68 mph (swimming)	fish	oceans
giraffe	32 mph (running)	mammal	grasslands
dolphin	30 mph (swimming)	mammal	oceans

source: www.worldalmanacforkids.com
david is studying a mammal, but ping is not. the animal that mandy is studying can be found in the ocean. the animal that alan is studying is slower than the animal that david is studying. which animal is david studying?
a. dolphin
b. elephant
c. sailfish
d. giraffe

Explanation:

Step1: Identify non - mammal for Ping

Since David is studying a mammal and Ping is not, Ping is studying the sailfish (a fish).

Step2: Identify Mandy's animal habitat

Mandy is studying an animal found in the ocean. So Mandy could be studying the sailfish or the dolphin. But since Ping is studying the sailfish, Mandy is studying the dolphin.

Step3: Compare speeds of remaining mammals

The remaining mammals are elephant and giraffe. The speed of the elephant is 25 mph and the speed of the giraffe is 32 mph. Since the animal Alan is studying is slower than the animal David is studying, David is studying the giraffe and Alan is studying the elephant.

Answer:

d. Giraffe