3. What is Red Fort made of ? a) Limestone
b) Red Sandstone
c) Clay
d) Red marble

Explanation:

Red fort is made up of red sandstone

Red fort is made up of Red Sandstone.

Explanation:

Red Fort Architecture

Its massive, 2.5-km-long enclosing walls are made of red sandstone and that's where the monument got its name from. A few parts of the fort are also made of red stone while the remaining structure is built using marble.

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.