What are trojan asteroids?
(question 5 in image)

A. Asteroids that pass through the inner Solar System and share Jupiter's orbit around the Sun.

Explanation:

Asteroids are irregular shaped and sized rocky bodies that orbit the sun. These lie in the inner solar system mostly in the asteroid belt which is between orbit of Mars and Jupiter.

Trojan means a small celestial body which shares the orbit with a large celestial body. Trojan asteroids are those asteroids which share the orbit of Jupiter and revolve the sun along with it. There are two regions around Jupiter where Trojan asteroids can be found.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.